{"title":"Fuel Pressure Regulators","description":"\u003cp\u003eRadium Engineering fuel pressure regulators. Precise, stable pressure control for everything from stock replacement to multi pump E85 systems.\u003c\/p\u003e","products":[{"product_id":"fpr10-pro-lite-black-fuel-pressure-regulator","title":"FPR10 Pro-Lite Black - Fuel Pressure Regulator","description":"\u003cp\u003eThe Turbosmart FPR Pro-lite 10 Series provides market-leading fuel control and response via actual 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel feed and -10 \/ 10AN return fittings. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Pro-lite FPR is suitable for all fuel types, including race fuel and aggressive leaded fuels. The FPR10 Pro-lite includes 2 x 10AN inlet ports and 1 x 10AN fuel return port (or 1 inlet and 1 outlet if a dead head style fuel system is used). \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e 10AN Inlet and Return Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio \u0026amp; Response Adjustable Base Pressure Between 50psi and 130psi 1\/8 NPT Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNeed More Fuel Ports? Check out the FPR10 Pro Series (EFI \u0026amp; Mechanical):\u003c\/strong\u003e \u003cbr\u003eFPR10 Pro 5 Port EFI Suit -10AN (Black) TS-0404-1242 FPR10 Pro M 5 Port Mechanical Pump Suit -10AN (Black) TS-0404-1342\u003c\/p\u003e","brand":"Turbosmart USA","offers":[{"title":"Black","offer_id":43544944902211,"sku":"TS-0404-1442","price":333.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_95b66d31-1091-4653-a715-59ce3716884e.jpg?v=1784309780"},{"product_id":"fpr10-fuel-pressure-regulator-suit-10an-sleeper","title":"FPR10 Fuel Pressure Regulator Suit -10AN (Sleeper)","description":"The Turbosmart FPR10 Series provides market-leading fuel control and response via a true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel systems. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Range includes a 10AN inlet, outlet and returns port and is available in Standard (35psi to 80psi) and LP (3psi to 20psi) for Low Pressure and Carburettor Systems to suit 3000HP systems. \u003cbr\u003e \u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio and Response Adjustable Pressure 1\/8 NPT Gauge \/ Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm Detailed Specific Fuel Flow Data and Spec \u003cbr\u003e \u003cb\u003eAvailable in:\u003c\/b\u003e\u003cbr\u003e FPR10 (Blue) TS-0404-1041 FPR10 (Black) TS-0404-1042 FPR10 (Purple) TS-0404-1043 FPR10 (Red) TS-0404-1044 FPR10 (LP) TS-0404-1142","brand":"Turbosmart USA","offers":[{"title":"Sleeper","offer_id":43544963219523,"sku":"TS-0404-1045","price":302.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_fa71d1bd-c1ee-443e-96f5-d38e3c55d66a.jpg?v=1784309979"},{"product_id":"fpr10-pro-m-5-port-mechanical-pump-suit-10an","title":"FPR10 Pro M 5 Port Mechanical Pump Suit -10AN (Black)","description":"The Turbosmart FPR Pro 10 Series provides market-leading fuel control and response via true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel feed and -10 \/ 10AN return fittings. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Pro Series suits all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Pro Range includes 1 x 10AN inlet, 4 x 8AN outlet ports and an 10AN return and is available in Pro EFI (50psi to 130psi) and Pro M (50psi to 100psi) for Mechanical Pump Systems.\u003cbr\u003e\u003cbr\u003eAvailable in Pro (EFI) and Pro M (Mechanical Pump) - Suits Up to 3000HP Systems.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e10AN Inlet and Return\u003cbr\u003e4 x 8AN Fuel Distribution\u003cbr\u003eStainless Steel Valve Seat\u003cbr\u003eSuitable for all fuel types\u003cbr\u003e1:1 Class Leading Ratio \u0026amp; Response\u003cbr\u003eAdjustable Pressure\u003cbr\u003e1\/8 NPT Pressure Sensor Port\u003cbr\u003eUnique Locking Collar Design\u003cbr\u003eMilspec Diaphragm\u003cbr\u003eDetailed Specific Fuel Flow Data \u0026amp; Spec\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFPR10 Pro Series (EFI \u0026amp; Mechanical) available in:\u003c\/b\u003e\u003cbr\u003eFPR10 Pro 5 Port EFI Suit -10AN (Black) TS-0404-1242\u003cbr\u003eFPR10 Pro M 5 Port Mechanical Pump Suit -10AN (Black) TS-0404-1342","brand":"Turbosmart USA","offers":[{"title":"Black","offer_id":43544968265795,"sku":"TS-0404-1342","price":417.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_44fe9820-2ab8-4e48-98d8-318faf9d8be2.jpg?v=1784310035"},{"product_id":"fpr10-pro-5-port-efi-suit-10an-black","title":"FPR10 Pro 5 Port EFI Suit -10AN (Black)","description":"The Turbosmart FPR Pro 10 Series provides market-leading fuel control and response via actual 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel feed and -10 \/ 10AN return fittings. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Pro Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Pro Range includes 1 x 10AN inlet, 4 x 8AN outlet ports and an 10AN return and is available in Pro EFI (50psi to 130psi) and Pro M (50psi to 100psi) for Mechanical Pump Systems.\u003cbr\u003e\u003cbr\u003eAvailable in Pro (EFI) and Pro M (Mechanical Pump) - Suits Up to 3000HP Systems.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e10AN Inlet and Return\u003cbr\u003e4 x 8AN Fuel Distribution\u003cbr\u003eStainless Steel Valve Seat\u003cbr\u003eSuitable for all fuel types\u003cbr\u003e1:1 Class Leading Ratio \u0026amp; Response\u003cbr\u003eAdjustable Pressure\u003cbr\u003e1\/8 NPT Pressure Sensor Port\u003cbr\u003eUnique Locking Collar Design\u003cbr\u003eMilspec Diaphragm\u003cbr\u003eDetailed Specific Fuel Flow Data \u0026amp; Spec\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFPR10 Pro Series (EFI \u0026amp; Mechanical) available in:\u003c\/b\u003e\u003cbr\u003eFPR10 Pro 5 Port EFI Suit -10AN (Black) TS-0404-1242\u003cbr\u003eFPR10 Pro M 5 Port Mechanical Pump Suit -10AN (Black) TS-0404-1342","brand":"Turbosmart USA","offers":[{"title":"Black","offer_id":43544976228419,"sku":"TS-0404-1242","price":363.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_55e77b9c-5848-4d7f-a87f-3525a8942d9d.jpg?v=1784310117"},{"product_id":"fpr10-low-pressure-lp-fuel-pressure-regulator-suit-10an-black","title":"FPR10 Low Pressure (LP) Fuel Pressure Regulator Suit -10AN (Black)","description":"\u003cp\u003e\u003c\/p\u003e","brand":"Turbosmart USA","offers":[{"title":"Black","offer_id":43544981700675,"sku":"TS-0404-1142","price":296.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_594aed4d-2a64-489b-a0ef-88bac27f2c07.jpg?v=1784310174"},{"product_id":"fpr10-fuel-pressure-regulator-suit-10an-red","title":"FPR10 Fuel Pressure Regulator Suit -10AN (Red)","description":"The Turbosmart FPR10 Series provides market-leading fuel control and response via a true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel systems. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Range includes a 10AN inlet, outlet and returns port and is available in Standard (35psi to 80psi) and LP (3psi to 20psi) for Low Pressure and Carburettor Systems to suit 3000HP systems. \u003cbr\u003e \u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio and Response Adjustable Pressure 1\/8 NPT Gauge \/ Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm Detailed Specific Fuel Flow Data and Spec \u003cbr\u003e \u003cb\u003eAvailable in:\u003c\/b\u003e\u003cbr\u003e FPR10 (Blue) TS-0404-1041 FPR10 (Black) TS-0404-1042 FPR10 (Purple) TS-0404-1043 FPR10 (Red) TS-0404-1044 FPR10 (LP) TS-0404-1142","brand":"Turbosmart USA","offers":[{"title":"Red","offer_id":43544983502915,"sku":"TS-0404-1044","price":296.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_74059de6-f413-4043-949f-b39862837d7a.jpg?v=1784310201"},{"product_id":"fpr10-fuel-pressure-regulator-suit-10an-purple","title":"FPR10 Fuel Pressure Regulator Suit -10AN (Purple)","description":"The Turbosmart FPR10 Series provides market-leading fuel control and response via a true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel systems. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Range includes a 10AN inlet, outlet and returns port and is available in Standard (35psi to 80psi) and LP (3psi to 20psi) for Low Pressure and Carburettor Systems to suit 3000HP systems. \u003cbr\u003e \u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio and Response Adjustable Pressure 1\/8 NPT Gauge \/ Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm Detailed Specific Fuel Flow Data and Spec \u003cbr\u003e \u003cb\u003eAvailable in:\u003c\/b\u003e\u003cbr\u003e FPR10 (Blue) TS-0404-1041 FPR10 (Black) TS-0404-1042 FPR10 (Purple) TS-0404-1043 FPR10 (Red) TS-0404-1044 FPR10 (LP) TS-0404-1142","brand":"Turbosmart USA","offers":[{"title":"Purple","offer_id":43544989466691,"sku":"TS-0404-1043","price":296.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_6e97e12a-240c-4f29-9b3e-656f941c2653.jpg?v=1784310262"},{"product_id":"fpr10-fuel-pressure-regulator-suit-10an-black","title":"FPR10 Fuel Pressure Regulator Suit -10AN (Black)","description":"The Turbosmart FPR10 Series provides market-leading fuel control and response via a true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel systems. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Range includes a 10AN inlet, outlet and returns port and is available in Standard (35psi to 80psi) and LP (3psi to 20psi) for Low Pressure and Carburettor Systems to suit 3000HP systems. \u003cbr\u003e \u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio and Response Adjustable Pressure 1\/8 NPT Gauge \/ Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm Detailed Specific Fuel Flow Data and Spec \u003cbr\u003e \u003cb\u003eAvailable in:\u003c\/b\u003e\u003cbr\u003e FPR10 (Blue) TS-0404-1041 FPR10 (Black) TS-0404-1042 FPR10 (Purple) TS-0404-1043 FPR10 (Red) TS-0404-1044 FPR10 (LP) TS-0404-1142","brand":"Turbosmart USA","offers":[{"title":"Black","offer_id":43544997003331,"sku":"TS-0404-1042","price":296.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_4126dd05-7a3b-4cd0-b723-c302c5494628.jpg?v=1784310309"},{"product_id":"fpr10-fuel-pressure-regulator-suit-10an-blue","title":"FPR10 Fuel Pressure Regulator Suit -10AN (Blue)","description":"The Turbosmart FPR10 Series provides market-leading fuel control and response via a true 1:1 ratio and superior flow and bypass capacity for vehicles with -10 \/ 10AN fuel systems. Utilising our Stainless Steel Valve Seat \u0026amp; Milspec Diaphragm, the FPR10 Series is suitable for all Fuel types, including Race Fuel and aggressive leaded fuels. Our FPR10 Range includes a 10AN inlet, outlet and returns port and is available in Standard (35psi to 80psi) and LP (3psi to 20psi) for Low Pressure and Carburettor Systems to suit 3000HP systems. \u003cbr\u003e \u003cb\u003eFeatures\u003c\/b\u003e\u003cbr\u003e Stainless Steel Valve Seat Suitable for all fuel types 1:1 Class Leading Ratio and Response Adjustable Pressure 1\/8 NPT Gauge \/ Pressure Sensor Port Unique Locking Collar Design Milspec Diaphragm Detailed Specific Fuel Flow Data and Spec \u003cbr\u003e \u003cb\u003eAvailable in:\u003c\/b\u003e\u003cbr\u003e FPR10 (Blue) TS-0404-1041 FPR10 (Black) TS-0404-1042 FPR10 (Purple) TS-0404-1043 FPR10 (Red) TS-0404-1044 FPR10 (LP) TS-0404-1142","brand":"Turbosmart USA","offers":[{"title":"Blue","offer_id":43545004933187,"sku":"TS-0404-1041","price":296.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/media_5996bfa2-ff9f-4952-90bd-181adb5c5c9b.jpg?v=1784310356"},{"product_id":"radium-engineering-direct-mount-fuel-pulse-damper-kits-20-0176","title":"Radium Engineering Direct Mount Fuel Pulse Damper Kits (20-0176)","description":"\u003cp\u003e\u003cstrong\u003eThose lean AFR spikes your tuner can't tune out might not be a tuning problem at all.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery injector opening and closing event sends a pressure pulse through the fuel rail, and with high-flow injectors those oscillations add up to unstable rail pressure, idle surge, and stumbles that show up as random lean spikes on the wideband. The \u003cstrong\u003eRadium Engineering Direct Mount Fuel Pulse Damper Kit\u003c\/strong\u003e threads into an 8AN ORB or 3\/8\" NPT port on your rail and uses an internal diaphragm to absorb those pulses, with a vacuum\/boost reference port that keeps the damper working correctly at elevated fuel pressures. Available as the FPD-R (40-70 psi base pressure) or FPD-XR (40-105 psi base pressure). Stable rail pressure across the whole RPM range, measured, not marketed.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA smoother idle, especially on big injectors that used to surge\u003c\/li\u003e\n\u003cli\u003eLean stumbles disappearing from spots in the RPM range no tune could fix\u003c\/li\u003e\n\u003cli\u003eA cleaner, more consistent AFR trace on the wideband from tip-in to redline\u003c\/li\u003e\n\u003cli\u003eFreedom to mount it at any angle, even upside down, wherever the rail allows\u003c\/li\u003e\n\u003cli\u003eOne less variable to chase during dyno sessions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInternal diaphragm absorbs injector pressure pulses and stabilizes rail pressure\u003c\/li\u003e\n\u003cli\u003eVacuum\/boost reference port maintains damping at elevated pressures, essential with 1:1 rising-rate regulators\u003c\/li\u003e\n\u003cli\u003eFPD-R: 40-70 psi base static pressure range; FPD-XR: 40-105 psi base static pressure range\u003c\/li\u003e\n\u003cli\u003e8AN ORB versions (20-0776 FPD-R, 20-0777 FPD-XR) seal with an FKM O-ring and swivel 360 degrees after tightening to clock the vacuum port\u003c\/li\u003e\n\u003cli\u003e3\/8\" NPT versions (20-0178 FPD-R, 20-0179 FPD-XR) seal on tapered threads and clock during tightening\u003c\/li\u003e\n\u003cli\u003eSafe for all fuel types including alcohol blends such as E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eBase static pressure is what your gauge reads with the pump running and no vacuum line on the regulator, and it determines which damper you need. If your base pressure sits between 40 and 70 psi, the FPD-R covers you; between 70 and 105 psi, step up to the FPD-XR. Dynamic pressure from a rising-rate regulator can swing outside those ranges and the damper still works, as long as base pressure was set within range and the vacuum\/boost reference line is connected. That reference port is what separates Radium's design from OEM-style dampers, which fall out of their working range as boost drives rail pressure up. For best results mount the damper directly on the fuel rail, though some systems also benefit from one on the return line. Two hard limits: these dampers cannot be used with mechanical fuel pumps or on the high-pressure side of direct injection systems, because those pressure pulses will rupture the diaphragm. For a 6AN ORB port, Radium's 14-0600 adapter (sold separately) adapts either 8AN ORB damper.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized, laser engraved aluminum top (R or XR)\u003c\/li\u003e\n\u003cli\u003e1x Anodized aluminum body with male threads (8AN ORB or 3\/8\" NPT per selection)\u003c\/li\u003e\n\u003cli\u003eStainless steel hardware\u003c\/li\u003e\n\u003cli\u003eRubber vacuum hose, 4mm ID\u003c\/li\u003e\n\u003cli\u003e1x Vacuum hose Y-fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: any fuel rail or fitting with an 8AN ORB or 3\/8\" NPT female port\u003c\/li\u003e\n\u003cli\u003e6AN ORB ports supported with optional 14-0600 adapter (sold separately)\u003c\/li\u003e\n\u003cli\u003ePort fuel injection systems only; not compatible with mechanical fuel pumps or direct injection high-pressure circuits\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"FPD-R (40 - 70psi)","offer_id":43672688033859,"sku":"20-0178","price":85.45,"currency_code":"USD","in_stock":true},{"title":"FPD-XR (43 - 78psi)","offer_id":43672688099395,"sku":"20-0777","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-32046408466502_376a806f-8a9d-43c8-86b3-24e53a9e6f3c.jpg?v=1786717045"},{"product_id":"radium-fuel-pressure-regulator-kit-2008-2017-subaru-sti-20-0265","title":"Radium Fuel Pressure Regulator Kit | 2008-2021 Subaru STI (20-0965)","description":"\u003cp\u003e\u003cstrong\u003eThe GR\/GV STI's quasi dead-end fuel routing is behind more stumble complaints than most owners realize.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFrom the factory, the 2008-2021 STI circulates fuel through the regulator and only sends it to the engine on demand, a layout Subaru tuners have long worked around. The \u003cstrong\u003eRadium Engineering Fuel Pressure Regulator Kit\u003c\/strong\u003e replaces the OEM regulator and damper assembly and re-routes fuel to cycle through the fuel rails before reaching the regulator and returning to the tank, the routing tuners prefer for chasing out stumble issues. The RA-series regulator at its core brings tool-less pressure adjustment with 1 psi detents and a 360-degree swiveling vacuum port. It installs in the factory regulator location, no relocation bracketry needed.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSmoother, more consistent running as constant flow through the rails replaces the dead-end routing\u003c\/li\u003e\n\u003cli\u003eBase pressure changes by hand in seconds, with haptic detents instead of a jam nut and set screw\u003c\/li\u003e\n\u003cli\u003eA more stable vacuum signal to the regulator, re-referenced from the plenum instead of the #4 runner\u003c\/li\u003e\n\u003cli\u003eA cleaner engine bay with the regulator sitting exactly where the factory unit lived\u003c\/li\u003e\n\u003cli\u003eEasy pressure checks if you add the optional gauge to the spare port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplaces the OEM fuel pressure regulator and damper assembly on the USDM EJ257 STI\u003c\/li\u003e\n\u003cli\u003eRe-routes fuel through the rails before the regulator, the preferred routing for addressing stumbling\u003c\/li\u003e\n\u003cli\u003eRA-series regulator with tool-less knob adjustment; each detent changes pressure roughly 1 psi (+\/- 0.5 psi)\u003c\/li\u003e\n\u003cli\u003eSingle stainless steel return orifice generates laminar flow for enhanced pressure stability\u003c\/li\u003e\n\u003cli\u003e360-degree swiveling, double O-ring sealed vacuum reference port\u003c\/li\u003e\n\u003cli\u003eUnused 8AN ORB port accepts the optional Radium 20-0386 pressure gauge kit, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe factory system's weakness is that fuel loiters at the regulator instead of continuously sweeping through the rails, which invites pressure inconsistency at the injectors. This kit reverses that: feed enters the rails, flows through them, then meets the regulator before returning to the tank, so the injectors always sit in moving, pressure-controlled fuel. The included vacuum hose and fittings relocate the regulator's reference signal from the #4 cylinder runner to the intake manifold plenum, trading a pulsing single-runner signal for a stable average that the diaphragm can actually track. Adjustment is where the RA-series stands apart: turn the knob and feel each detent click off roughly 1 psi, no wrenches, no jam nut, no set screw. Installation happens in the stock regulator location with the OEM lines, and if you want eyes on your base pressure, the spare 8AN ORB port takes Radium's 90-degree gauge kit. This kit is specific to the USDM EJ257 STI, so 2015-2021 WRX FA20DIT owners need to look elsewhere.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x RA-series direct mount fuel pressure regulator (black)\u003c\/li\u003e\n\u003cli\u003eMounting and adapter hardware for the OEM regulator location\u003c\/li\u003e\n\u003cli\u003eVacuum hose and fittings to re-route the reference line to the intake manifold plenum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2008-2021 Subaru WRX STI (USDM, EJ257 engine only)\u003c\/li\u003e\n\u003cli\u003eNot compatible with 2015-2021 Subaru WRX (FA20DIT)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672688427075,"sku":"20-0965","price":256.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0965-00-30957279871046_18b93f96-e395-43ab-9622-00a564510747.jpg?v=1786717051"},{"product_id":"radium-engineering-direct-mount-regulator-dmr-ra-universal-20-1623-00","title":"Radium Engineering Direct Mount Regulator DMR-RA | Universal (20-1623-00)","description":"\u003cp\u003e\u003cstrong\u003eMost regulators make you choose between rail-mount clean and remote-mount practical; this one swivels to do either.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering DMR-RA Direct Mount Regulator\u003c\/strong\u003e is a compact, high-performance adjustable EFI fuel pressure regulator built around a rotating assembly. Its included 360-degree swiveling adapter threads it straight into any compatible 8AN ORB fuel rail port, such as the ones on every Radium rail, or it mounts remotely with the optional remote mount kit. Tool-less knob adjustment with roughly 1 psi detents replaces the old jam nut and set screw entirely. Compact package, no performance compromise, in black or Radium green.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePressure changes in seconds by hand, each detent clicking off about 1 psi\u003c\/li\u003e\n\u003cli\u003eA regulator that tucks into tight engine bays instead of demanding bracket real estate\u003c\/li\u003e\n\u003cli\u003eRock-steady pressure from the laminar-flow stainless return orifice\u003c\/li\u003e\n\u003cli\u003eFreedom to clock the return fitting and vacuum port exactly where your plumbing wants them\u003c\/li\u003e\n\u003cli\u003eSimple base-pressure checks with a gauge in one of the 1\/8\" NPT side ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompact adjustable EFI regulator with tool-less detent knob adjustment, approximately 1 psi (+\/- 0.5 psi) per detent\u003c\/li\u003e\n\u003cli\u003eIncluded 360-degree swiveling adapter mounts the regulator to any compatible 8AN ORB rail port; remote mounting available with kit 20-0624 (sold separately)\u003c\/li\u003e\n\u003cli\u003e6AN ORB female main inlet port and 6AN ORB bottom return port with included 360-degree swiveling 90-degree 6AN male return fitting\u003c\/li\u003e\n\u003cli\u003eTwo 1\/8\" NPT side ports for a gauge, transducer, or temperature probe, with two PTFE-impregnated plugs provided\u003c\/li\u003e\n\u003cli\u003eSingle stainless steel return orifice generates laminar flow for enhanced pressure stability\u003c\/li\u003e\n\u003cli\u003eCompatible with all gasoline types plus methanol, ethanol, and E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe rotating assembly is what makes the DMR-RA flexible. Mounted on-rail, the swiveling 8AN ORB adapter lets the regulator body clock to clear intake plumbing while the return fitting independently swivels to aim the return line. The vacuum reference is equally adaptable, with four included fittings covering a 5mm barb, 1\/4\" push-to-connect, 3AN male, and a plug for returnless setups. Minimum regulated pressure is 18.5 psi (1.3 bar), with maximum pressure determined by your pump's capability, and the regulator handles single or multiple pump systems. If your rail uses 6AN ORB or 10AN ORB ports instead of 8AN, Radium's port adapters (sold separately) bridge the difference, and off-rail installs use the remote mount kit's bracket and inlet fittings. Add a 0-100 psi gauge in a side port and setting base pressure becomes a two-minute job.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Main rotating assembly regulator (black or green per selection)\u003c\/li\u003e\n\u003cli\u003e1x Swiveling inlet fitting for 8AN ORB fuel rails\u003c\/li\u003e\n\u003cli\u003e1x 6AN male swivel return fitting\u003c\/li\u003e\n\u003cli\u003e1x 5mm barbed vacuum fitting, 1x 1\/4\" push-to-connect vacuum fitting, 1x 3AN male vacuum fitting, 1x vacuum plug (returnless)\u003c\/li\u003e\n\u003cli\u003e2x PTFE-impregnated 1\/8\" NPT plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: EFI fuel systems, single or multiple pumps\u003c\/li\u003e\n\u003cli\u003eDirect mount on any compatible 8AN ORB fuel rail port, including all Radium fuel rails\u003c\/li\u003e\n\u003cli\u003e6AN ORB and 10AN ORB rails via port adapters, remote mounting via kit 20-0624 (each sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Black","offer_id":43672689344579,"sku":"20-1623-00","price":170.95,"currency_code":"USD","in_stock":true},{"title":"Green","offer_id":43672689377347,"sku":"20-1623-01","price":170.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-1623-00_215ad7e1-e939-4dd4-8436-8ac73af4ca0a.jpg?v=1786717056"},{"product_id":"radium-fpd-xr-inline-fuel-pulse-damper-kit-20-0200","title":"Radium FPD-XR Inline Fuel Pulse Damper Kit (20-0200)","description":"\u003cp\u003e\u003cstrong\u003eHigh base pressure builds broke the old pulse damper rules, so Radium built the XR.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInjector pulses destabilize rail pressure in every EFI system, but returnless and high-pressure setups push past what standard dampers tolerate. The \u003cstrong\u003eRadium Engineering FPD-XR Inline Fuel Pulse Damper Kit\u003c\/strong\u003e mounts the extended-range FPD-XR in the fuel line itself, absorbing oscillations with its internal diaphragm across a 40 to 105 psi operating range. Where the standard FPD-R requires base static pressure between 40 and 70 psi, the XR covers the high-pressure territory, including systems like a 72.5 psi BMW E46 M3, and in many installs its vacuum\/boost reference line is optional rather than mandatory. Inline placement means it works with fuel systems that have no rail port to spare.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStable rail pressure on high base-pressure and returnless systems the standard damper cannot serve\u003c\/li\u003e\n\u003cli\u003eSmoother idle and cleaner AFR traces, especially with high flow injectors\u003c\/li\u003e\n\u003cli\u003ePlacement freedom, since the inline kit installs anywhere in the line rather than needing a rail port\u003c\/li\u003e\n\u003cli\u003eSimpler plumbing in many cases, with the boost reference line unnecessary when pressure stays within 40-105 psi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFPD-XR extended range damper: 40 to 105 psi fuel pressure operating range\u003c\/li\u003e\n\u003cli\u003eInline kit architecture installs the damper in the fuel line with common fittings\u003c\/li\u003e\n\u003cli\u003eInternal diaphragm absorbs injector-driven pressure oscillations, measurable through the RPM range\u003c\/li\u003e\n\u003cli\u003eVacuum\/boost reference port; connection unnecessary when pressure remains within range, required if pressure can fall below 40 psi under vacuum\u003c\/li\u003e\n\u003cli\u003eMountable at any angle, including upside down\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eChoosing between the FPD-R and FPD-XR comes down to one number: base static fuel pressure. Radium's own worked examples draw the line clearly. A Mitsubishi Evo at 43.5 psi base with a rising rate regulator can run either damper, though the standard FPD-R needs its boost reference connected since pressure climbs to 73.5 psi at full boost. An E46 M3 at 72.5 psi base exceeds the FPD-R's 40 to 70 psi requirement entirely, and only the XR applies. The XR's wider window also relaxes the reference line rules: if maximum pressure stays under 105 psi, the line is optional, though it may still be needed if pressure can fall below 40 psi under vacuum. Beyond damper selection, placement follows the system's evidence: most builds damp at the rail feed, some need multiple dampers, and some benefit from one on the return line. Not compatible with mechanical pumps or the high-pressure side of direct injection systems.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x FPD-XR fuel pulse damper\u003c\/li\u003e\n\u003cli\u003eInline mounting kit with fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: EFI fuel systems with base static pressure from 40 to 105 psi\u003c\/li\u003e\n\u003cli\u003eHigh base-pressure and returnless architectures beyond the standard FPD-R's 40-70 psi window\u003c\/li\u003e\n\u003cli\u003eNot for mechanical fuel pumps or direct injection high-pressure circuits\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"'-6AN Adapter Fittings","offer_id":43672691015747,"sku":"20-0200-06","price":123.45,"currency_code":"USD","in_stock":true},{"title":"'-8AN Adapter Fittings","offer_id":43672691048515,"sku":"20-0200-08","price":123.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-28026033176646_fa1627bd-750c-404c-a109-f0a272d207f2.jpg?v=1786717073"},{"product_id":"radium-engineering-adjustable-pressure-switch-universal-20-0236","title":"Radium Engineering Adjustable Pressure Switch | Universal (20-0236)","description":"\u003cp\u003e\u003cstrong\u003eA second fuel pump running full-time is wasted heat and noise; one that wakes up on boost is a system.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStaged pumps need a trigger that knows when the engine actually needs them. The \u003cstrong\u003eRadium Engineering Adjustable Pressure Switch\u003c\/strong\u003e watches positive boost pressure and closes at a set point you dial in anywhere from 3 to 15 psi, firing the relay for your staged pump exactly when demand arrives. It is a normally open switch in a stainless housing, and because it is a general-purpose trigger, it can switch any low-current device, not just fuel pumps. Set it, plumb it to boost, and let the fuel system stage itself.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA quieter, cooler fuel system at cruise, with the staged pump asleep until boost calls it\u003c\/li\u003e\n\u003cli\u003eLonger pump life, since the second pump only runs when it is actually working\u003c\/li\u003e\n\u003cli\u003eFull flow arriving automatically at your chosen boost threshold, no driver input\u003c\/li\u003e\n\u003cli\u003eAn adjustable set point that moves with the build as boost targets change\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNormally open (N.O.) pressure switch triggered by positive boost pressure\u003c\/li\u003e\n\u003cli\u003eAdjustable set point from 3 to 15 psi to match the application\u003c\/li\u003e\n\u003cli\u003eStainless steel construction\u003c\/li\u003e\n\u003cli\u003eDesigned to trigger a relay; switches any device drawing less than 0.5 amp on the trigger circuit\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose: staged fuel pumps, warning devices, or other boost-referenced switching\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe wiring architecture matters here, and Radium is specific about it: the switch is a signal device, not a power device. It closes the low-current trigger circuit of a relay, and the relay carries the pump's actual load, which is why the 0.5 amp trigger limit exists and why pairing this switch with a Radium DIY fuel pump wiring kit per staged pump is the clean install. Plumb the switch's pressure reference to a manifold boost source, set the adjustment to your desired staging threshold, and the sequence takes care of itself: below the set point the normally open contacts stay open and the staged pump rests, above it they close, the relay latches, and the pump joins the party. This is the standard method for staging surge tank and MPFST pumps so a triple-pump system idles on one pump and delivers everything under load. Review Radium's installation instructions for the wiring diagram before final hookup.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Adjustable pressure switch, 3-15 psi, normally open\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: staged fuel pump triggering on boosted engines\u003c\/li\u003e\n\u003cli\u003eRadium MPFST, FST, and multi-pump hanger systems with staged pumps\u003c\/li\u003e\n\u003cli\u003eAny boost-referenced relay trigger duty under 0.5 amp\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672691441731,"sku":"20-0236","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0236-29454198603846_81f61246-3a3c-45e3-a9c1-801ff9bf7c9d.jpg?v=1786717077"},{"product_id":"radium-engineering-fuel-pressure-gauge-w-6an-inline-adapter-universal-20-0152","title":"Radium Engineering Fuel Pressure Gauge W\/ 6AN Inline Adapter | Universal (20-0152)","description":"\u003cp\u003e\u003cstrong\u003eFuel pressure you cannot see is fuel pressure you are guessing at.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSetting a regulator, verifying a pump, or chasing a lean condition all start with a number, and this puts it in the line. The \u003cstrong\u003eRadium Engineering Fuel Pressure Gauge with 6AN Inline Adapter\u003c\/strong\u003e pairs a silicone filled 0-100 psi (0-6.9 Bar) gauge, accurate to +\/- 2 percent, with a machined and anodized aluminum inline 6AN adapter that installs at any 6AN connection in the system. The stainless steel case and acrylic lens shrug off the engine bay, and the silicone fill damps the needle so pressure reads steady instead of buzzing. Suitable for all fuels, from pump gas to E85.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstant confirmation of base and boosted fuel pressure wherever the adapter sits in the line\u003c\/li\u003e\n\u003cli\u003eA rock-steady needle, with the silicone fill absorbing engine vibration\u003c\/li\u003e\n\u003cli\u003eRegulator setup and pump diagnostics done with data instead of feel\u003c\/li\u003e\n\u003cli\u003eOne-part installation at any 6AN connection, including the outlet of a Radium FST-R\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e0-100 psi (0-6.9 Bar) range with +\/- 2% accuracy, suitable for all fuels\u003c\/li\u003e\n\u003cli\u003eSilicone filled dial prevents needle vibration for easy reading\u003c\/li\u003e\n\u003cli\u003eStainless steel case with acrylic lens\u003c\/li\u003e\n\u003cli\u003eMachined and anodized aluminum inline 6AN adapter included\u003c\/li\u003e\n\u003cli\u003eInternal silicone bubble is normal and does not affect operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe inline adapter is what separates this from a bare gauge: instead of hunting for a spare port, the adapter splices into an existing 6AN hose run and carries the gauge with it, which makes the feed line near the rail or the surge tank outlet natural homes. Radium notes it drops straight onto the FST-R outlet port for surge tank builds. Two care notes from Radium are worth keeping: over-pressurizing the gauge can permanently misalign the needle calibration, so keep it on circuits within its 100 psi range, and PTFE thread sealant paste should always be used on NPT threads during assembly. The item is not application specific, so verify your line size and routing before purchase.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 0-100 psi silicone filled fuel pressure gauge\u003c\/li\u003e\n\u003cli\u003e1x Machined and anodized aluminum inline 6AN adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: any 6AN fuel line connection, including the Radium FST-R outlet port\u003c\/li\u003e\n\u003cli\u003eAll fuel types including gasoline and E85; systems up to 100 psi\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672692359235,"sku":"20-0152","price":61.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0152-29454202404934_805f61be-552b-46df-be49-7aa93623ec72.jpg?v=1786717087"},{"product_id":"radium-fpd-r-6an-inline-fuel-pulse-damper-kit-20-0199-06","title":"Radium FPD-R Inline Fuel Pulse Damper Kit (20-0199)","description":"\u003cp\u003e\u003cstrong\u003eToyota put an inline pulse damper on the 2JZ-GTE for a reason; your AN-plumbed build deserves the same physics.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInjector events hammer the rail with pressure pulses, and when there is no rail port available for a damper, the line itself is the answer. The \u003cstrong\u003eRadium Engineering FPD-R Inline Fuel Pulse Damper Kit\u003c\/strong\u003e mounts the FPD-R in an anodized aluminum housing with a large 0.69\" center bore, two in-line ports machined 3\/4\"-16 for 8AN ORB fittings, and 6AN male adapter fittings sealing to the billet housing on FKM O-rings. A 1\/8\" NPT female port in the center takes a pressure gauge or sensor, and the supplied M6 hardware mounts the kit at any angle, including upside down. Factory-proven architecture, from the 2JZ-GTE to the VQ35DE to the EJ20\/EJ25, brought to your custom system.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA calmer idle and cleaner AFR trace, with injector-driven oscillation absorbed before it compounds\u003c\/li\u003e\n\u003cli\u003eThe stumble that resisted tuning finally gone, especially on high flow injectors\u003c\/li\u003e\n\u003cli\u003eDamping for systems with no rail-mount option, installed right in the feed line\u003c\/li\u003e\n\u003cli\u003eA ready-made 1\/8\" NPT port for the fuel pressure gauge or sensor the build wanted anyway\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFPD-R damper: for systems with base static fuel pressure between 40 and 70 psi\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum housing, 0.69\" center bore, dual 3\/4\"-16 (8AN ORB) in-line ports\u003c\/li\u003e\n\u003cli\u003e6AN male adapter fittings included, sealing on FKM O-rings; 8AN kit available separately\u003c\/li\u003e\n\u003cli\u003e1\/8\" NPT female center port for a gauge or pressure\/temperature sensor\u003c\/li\u003e\n\u003cli\u003eVacuum\/boost reference port maintains damper performance at elevated fuel pressures, essential with 1:1 rising rate regulators on boost\u003c\/li\u003e\n\u003cli\u003eMounts at any angle via supplied M6 bolts\/nuts; safe for all fuel types\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe R-versus-XR decision starts with base static pressure, measured with the pump running and no vacuum line on the regulator: the FPD-R requires 40 to 70 psi, while the FPD-XR extends to 105 psi. Radium's Evo example shows the nuance, since a 43.5 psi base car qualifies for the FPD-R even though boost pushes running pressure to 73.5 psi, provided the vacuum\/boost reference line is connected so the damper tracks the regulator. Packaging can also decide it: at 1.98\" tall with its green top, the FPD-R is shorter than the 2.60\" black-top FPD-XR, earning its place in space-constrained installs, though Radium recommends the XR when room allows. Plumb the damper as close to the fuel rails as possible for best results, keep it away from excessive heat like any fuel component, and remember the ecosystem logic: some systems need multiple dampers, and some benefit from one on the return line.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x FPD-R fuel pulse damper with anodized aluminum inline housing\u003c\/li\u003e\n\u003cli\u003e2x 6AN male adapter fittings with FKM O-rings\u003c\/li\u003e\n\u003cli\u003eM6 mounting bolts and nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: EFI systems with 40-70 psi base static fuel pressure and 6AN feed plumbing\u003c\/li\u003e\n\u003cli\u003eSystems without a rail-mount damper option; boosted cars with 1:1 rising rate regulators (reference line required)\u003c\/li\u003e\n\u003cli\u003eAll fuel types; not for mechanical pumps or direct injection high-pressure circuits\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"FPD-R (Range)","offer_id":43672692555843,"sku":"20-0199","price":99.95,"currency_code":"USD","in_stock":true},{"title":"FPD-XR (Extra Range)","offer_id":43672692588611,"sku":"20-0200","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0199_1200px_wide_af36ef53-1e5d-4eef-bd1b-88d833f3d14d.webp?v=1786717090"},{"product_id":"radium-universal-fuel-pressure-regulator-damper-20-1528-00","title":"Radium Universal Fuel Pressure Regulator Damper (20-1528-00)","description":"\u003cp\u003e\u003cstrong\u003eA regulator and a pulse damper are two mounts, four fittings, and six potential leaks; the FPRD is one of each.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Pressure Regulator Damper (FPRD-RA)\u003c\/strong\u003e consolidates the two most important pressure-management components into a single high-flow package: a fully functional high performance pressure regulator with a built-in fuel pulse damper. The inlet (side) and outlet (bottom) run large 10AN ORB (7\/8\"-14) ports for serious flow, two M6x1mm mounting holes plus an included laser cut anodized mounting plate handle installation, and the unit mounts in any orientation including upside down. One body, doing the work of a plumbing diagram.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRegulated and damped fuel pressure from one component instead of two mounted separately\u003c\/li\u003e\n\u003cli\u003eHigh-flow headroom through 10AN ORB inlet and outlet ports\u003c\/li\u003e\n\u003cli\u003eSmoother pressure traces, with injector pulses absorbed at the same point pressure is controlled\u003c\/li\u003e\n\u003cli\u003eMounting freedom in any orientation, with through-body holes or the included plate\u003c\/li\u003e\n\u003cli\u003eFewer joints, fittings, and failure points in the pressure side of the system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully functional high performance fuel pressure regulator with unique built-in fuel pulse damper\u003c\/li\u003e\n\u003cli\u003eLarge 10AN ORB (7\/8\"-14) inlet (side) and outlet (bottom) ports\u003c\/li\u003e\n\u003cli\u003eTwo M6x1mm threaded mounting holes; laser cut anodized aluminum mounting plate with 4 countersink M6x1mm bolts\/nuts included\u003c\/li\u003e\n\u003cli\u003eMountable in any direction including upside down\u003c\/li\u003e\n\u003cli\u003eRA-series rotating assembly architecture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe consolidation logic is about physics as much as packaging. Injector pulses and regulator response interact, and placing the damping diaphragm inside the regulator body means oscillations are absorbed exactly where the regulator is trying to hold a setpoint, rather than a hose length away. The 10AN port sizing signals this unit's intent: it is built for high-flow systems where a 6AN regulator would be the restriction, including multi-pump surge tank and hanger setups. Plumb the feed into the side inlet, the rail supply or return path per your architecture from the bottom outlet, and select Radium 10AN ORB adapter fittings to match your hose. As with all ORB connections, lubricate the O-rings before installation and skip the sealant. Fittings and gauge sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x FPRD-RA fuel pressure regulator damper\u003c\/li\u003e\n\u003cli\u003e1x Laser cut anodized aluminum mounting plate\u003c\/li\u003e\n\u003cli\u003e4x Countersink M6x1mm bolts and nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: high-flow fuel systems consolidating regulation and pulse damping\u003c\/li\u003e\n\u003cli\u003eMulti-pump surge tank, hanger, and big single-pump architectures\u003c\/li\u003e\n\u003cli\u003ePairs with Radium 10AN ORB adapter fittings, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672692621379,"sku":"20-1528-00","price":284.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-1528-00-30679825154118_d6ea5078-1ca4-4027-830e-ca9797d664db.jpg?v=1786717090"},{"product_id":"radium-engineering-0-100-psi-fuel-pressure-gauge-with-90-degree-adapter-universal-20-0407","title":"Radium Engineering 0-100 Psi Fuel Pressure Gauge With 90 Degree Adapter | Universal (20-0407)","description":"\u003cp\u003e\u003cstrong\u003eA rail-mounted gauge is only useful if you can read it without a mirror.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering 0-100 PSI Fuel Pressure Gauge with 90 Degree Adapter\u003c\/strong\u003e pairs Radium's silicone filled fuel pressure gauge with a 90 degree adapter that turns the dial to face you. The gauge reads 0 to 100 psi (0 to 6.9 Bar) with +\/- 2 percent accuracy, the silicone fill damps needle vibration for a steady read, and the stainless case with acrylic lens handles engine bay life. Suitable for all fuels.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA gauge face aimed at your eyes, with the 90 degree adapter solving rail-port orientation\u003c\/li\u003e\n\u003cli\u003eFuel pressure confirmed at a glance during regulator setup and tuning\u003c\/li\u003e\n\u003cli\u003eA calm, readable needle courtesy of the silicone fill\u003c\/li\u003e\n\u003cli\u003eAll-fuel compatibility from pump gas through E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e0-100 psi (0-6.9 Bar) range with +\/- 2% accuracy\u003c\/li\u003e\n\u003cli\u003eSilicone filled dial prevents needle vibration; internal silicone bubble is normal\u003c\/li\u003e\n\u003cli\u003eStainless steel case with acrylic lens\u003c\/li\u003e\n\u003cli\u003e90 degree adapter included for reorienting the gauge face\u003c\/li\u003e\n\u003cli\u003eSuitable for all fuels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe 90 degree adapter earns its place on installations where a straight-mounted gauge would face sideways or down, which describes most rail and regulator ports. Two care notes carry over from the rest of Radium's gauge family: over-pressurizing the gauge can permanently misalign the needle calibration, so keep it on circuits within its 100 psi range, and any NPT threads in the installation should always get PTFE thread sealant paste. Pair it with Radium's ORB gauge adapters to land on a rail port, or with the inline adapters to read pressure mid-line.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 0-100 psi silicone filled fuel pressure gauge\u003c\/li\u003e\n\u003cli\u003e1x 90 degree adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: fuel rails, regulators, and adapters where gauge orientation matters\u003c\/li\u003e\n\u003cli\u003eAll fuel types; systems up to 100 psi\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672692817987,"sku":"20-0407","price":61.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0407-29454197129286_ce5b2edb-8fe8-4d93-995f-785f976172fd.jpg?v=1786717094"},{"product_id":"radium-engineering-remote-mount-adapter-kit-universal-20-0624","title":"Radium Engineering Remote Mount Adapter Kit | Universal (20-0624)","description":"\u003cp\u003e\u003cstrong\u003eThe DMR was born to live on the rail, but not every engine bay agrees.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRadium's direct mount regulator bolts to the fuel rail's outlet port by design, and sometimes that spot is buried under an intake manifold runner or a brake booster. The \u003cstrong\u003eRadium Engineering DMR Remote Mount Adapter Kit\u003c\/strong\u003e relocates it: a stainless steel mounting bracket plus alternative regulator inlet fittings for 6AN or 8AN hose let the DMR mount anywhere in the vehicle like a standard aftermarket regulator, fed by a hose from the rail instead of threading onto it. Same regulator, wherever it actually fits.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDMR pressure control on engines where rail-mounting is physically impossible\u003c\/li\u003e\n\u003cli\u003ePlacement freedom for gauge visibility, adjustment access, and heat management\u003c\/li\u003e\n\u003cli\u003eA stainless bracket ready for firewall, strut tower, or panel mounting\u003c\/li\u003e\n\u003cli\u003eHose-size flexibility with both 6AN and 8AN inlet fitting options in the kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel DMR mounting bracket; requires two 0.275\" mounting holes at the chosen location\u003c\/li\u003e\n\u003cli\u003eAlternative regulator inlet fittings for 6AN or 8AN size hose\u003c\/li\u003e\n\u003cli\u003eConverts the DMR to a conventional remote regulator installation\u003c\/li\u003e\n\u003cli\u003eOnly compatible with Radium's Gen 2 DMR (sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe conversion follows Radium's documented sequence: lubricate and install the chosen ORB inlet fitting into the DMR's side inlet port, attach the bracket with the M5x0.8 screws, mount the assembly, then build a hose from the fuel rail outlet to the DMR inlet and run the return from the DMR's bottom 6AN ORB port back to the tank. The DMR's two 1\/8\" NPT ports remain available for a gauge (with PTFE paste) and the vacuum reference works exactly as it does rail-mounted, so nothing about the regulator's function changes, only its address. Remember Radium's standing rule for every DMR install: the regulator ships unset and must be adjusted to your application's pressure using a gauge or sensor before the engine runs. DMR regulator, hose, and gauge sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Stainless steel DMR mounting bracket with M5x0.8 screws\u003c\/li\u003e\n\u003cli\u003eAlternative regulator inlet fittings for 6AN or 8AN hose\u003c\/li\u003e\n\u003cli\u003eDMR regulator NOT included, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRadium Gen 2 DMR direct mount regulators only\u003c\/li\u003e\n\u003cli\u003eInstallations where rail-mounting the DMR is impractical\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672693473347,"sku":"20-0624","price":28.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0624_2177d8e8-c267-4401-b846-18f5475ec66f.jpg?v=1786717109"},{"product_id":"radium-engineering-multi-port-regulator-universal-20-1100-00","title":"Radium Engineering Multi-Port Regulator | Universal (20-1100-00)","description":"\u003cp\u003e\u003cstrong\u003eDual pumps into one feed, or one feed into two rails, usually means a Y fitting and a prayer; the MPR is the engineered version.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Multi-Port Regulator (MPR-RA)\u003c\/strong\u003e handles simple and complex high-flow fuel systems through pure port geometry: combine dual fuel pumps into a single feed line, split a single feed to a dual bank system with two rails, or plug the unused ports and run it as a conventional single pump, single rail regulator. The two lower return ports flow parallel with the pressure ports, eliminating elbow fittings, and either one can serve as the return. Built on Radium's RA-series platform with tool-less detented pressure adjustment and a laminar-flow stainless return orifice, it arrives with the fittings, plugs, bracket, and vacuum options to plumb it nearly any way a fuel system can be drawn.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne regulator replacing the Y fittings, elbows, and adapters a multi-pump system usually accumulates\u003c\/li\u003e\n\u003cli\u003ePressure set by hand through detented clicks, each worth about 1 psi (+\/- 0.5 psi), no jam nut or tools\u003c\/li\u003e\n\u003cli\u003eRock-stable pressure from the single stainless return orifice generating laminar flow\u003c\/li\u003e\n\u003cli\u003eA regulator that reconfigures with the build: single pump today, staged duals and twin rails later\u003c\/li\u003e\n\u003cli\u003eMounting freedom via through-body M6 holes for walls or the included bracket for floors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnique port configuration: merges dual pumps to one feed, splits one feed to dual rails, or runs single pump\/single rail with ports plugged\u003c\/li\u003e\n\u003cli\u003eTwo lower opposing return ports flowing parallel to the pressure ports; use either, plug the other\u003c\/li\u003e\n\u003cli\u003eRA-series tool-less pressure adjustment with 1 psi haptic detents; minimum pressure 18.5 psi (1.3 Bar), maximum limited only by pump relief or controller\u003c\/li\u003e\n\u003cli\u003eSingle stainless steel return orifice generates laminar flow for enhanced stability\u003c\/li\u003e\n\u003cli\u003e1:1 rising rate with 360 degree swiveling vacuum reference port; flow-through and dead-head plumbing supported\u003c\/li\u003e\n\u003cli\u003eM6 through-body mounting holes plus included floor bracket with M6x1mm hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe port math is what sets the MPR apart. A dual pump surge tank or hanger normally needs external merging before the regulator, and a V-configuration engine with two rails normally needs a splitter after it; the MPR's body performs both jobs internally, and the parallel-flowing return ports mean the return line leaves in the same plane as the feeds without a single elbow. Vacuum reference options ship in the box for every architecture: a 5mm barb, a 1\/4\" push-to-connect, a 3AN male fitting, and a plug for returnless-style dead-head installs. Radium's pressure spec is refreshingly honest, with an 18.5 psi floor and a ceiling set by your pump's relief valve or controller current limit rather than the regulator. Fuel pressure gauge and lines sold separately; plugs for every unused port are included.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x MPR-RA main rotating assembly\u003c\/li\u003e\n\u003cli\u003e1x Mounting bracket with M6x1mm hardware\u003c\/li\u003e\n\u003cli\u003eVacuum fittings: 5mm barb, 1\/4\" push-to-connect, 3AN male, and vacuum plug (returnless)\u003c\/li\u003e\n\u003cli\u003e2x 6AN ORB plugs, 1x 8AN ORB plug\u003c\/li\u003e\n\u003cli\u003e3x 6AN ORB to 6AN male adapters, 1x 8AN ORB to 8AN male adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: single pump, dual pump, single rail, and dual bank fuel systems\u003c\/li\u003e\n\u003cli\u003eRadium MPFST, FST, and multi-pump hanger systems; flow-through and dead-head architectures\u003c\/li\u003e\n\u003cli\u003eMinimum regulated pressure 18.5 psi; gasoline and ethanol fuels\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672693899331,"sku":"20-1100-00","price":199.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-1100-00_7271e261-ccb0-4c04-8521-9f512ed2ed64.jpg?v=1786717117"},{"product_id":"radium-engineering-fuel-pressure-regulator-w-4-bar-bosch-reg-universal-20-0010-01","title":"Radium Engineering Fuel Pressure Regulator W\/ 4 Bar Bosch Reg | Universal (20-0010-01)","description":"\u003cp\u003e\u003cstrong\u003eMillions of Audis, VWs, Porsches, and Fords trusted this exact Bosch regulator; Radium gave it a better home.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Pressure Regulator with 4 Bar Bosch Regulator\u003c\/strong\u003e is built around a genuine OEM Bosch regulator top rated 4 bar (58.2 psi) static at 255lph, housed in an extremely compact billet 6061 aluminum body that provides a convenient package for plumbing and mounting. \u003ccite index=\"72-1\"\u003eThe Bosch regulator tops are vacuum referenced with a 1:1 ratio, so as intake manifold pressure changes the fuel pressure changes at the same rate, or with the vacuum reference removed a constant static fuel pressure can be achieved. The regulator body is held in the housing with a stainless steel snap ring and can easily be removed for cleaning or replacement using snap-ring pliers.\u003c\/cite\u003e The two main high pressure ports are threaded 6AN ORB, a 6AN male return port is integrated into the housing itself, and a 1\/8\" NPT female port stands ready for a gauge or pressure transducer. Arrives assembled with the Bosch unit installed.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-grade pressure regulation from the Bosch top that production cars proved by the million\u003c\/li\u003e\n\u003cli\u003e1:1 boost-referenced delivery keeping effective injector pressure constant, or static duty with the reference removed\u003c\/li\u003e\n\u003cli\u003eA serviceable design, the snap ring releasing the regulator for cleaning or replacement in minutes\u003c\/li\u003e\n\u003cli\u003eOne fewer leak point, with the return fitting machined into the housing rather than threaded on\u003c\/li\u003e\n\u003cli\u003eGauge-ready monitoring via the front 1\/8\" NPT port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Bosch 4.0 bar (58.2 psi) static regulator top, pre-installed; NOT adjustable\u003c\/li\u003e\n\u003cli\u003eBillet 6061 aluminum housing, laser etched and anodized; stainless snap retaining ring\u003c\/li\u003e\n\u003cli\u003e2x 6AN ORB high pressure ports; integrated machined 6AN male return port; 1\/8\" NPT gauge port\u003c\/li\u003e\n\u003cli\u003eIncludes 6AN male adapter fitting, 6AN ORB plug fitting, 1\/8\"-27 NPT port plug\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum mounting bracket and stainless steel mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eTwo honest notes from Radium frame the purchase. First, the ratings assume a common Walbro 255lph pump, and the exact minimum, static, and maximum pressures are influenced by pump flow, so a significantly higher flowing pump may raise minimum pressures above what is advertised, with Radium's adjustable high flow regulators the better match for big-pump systems. Second, the 4 bar top is fixed by design, which is the point: it regulates at its rating forever with OEM reliability, no set-and-drift. The snap-in architecture adds flexibility later, since aftermarket adjustable tops and unique Bosch variations like 3.5 bar snap into the same billet housing. The optional Radium fuel pressure gauge secures to the front NPT port, and the sibling version carries the other Bosch rating.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Billet aluminum FPR housing with genuine Bosch 4 bar regulator installed\u003c\/li\u003e\n\u003cli\u003e1x 6AN male adapter fitting, 1x 6AN ORB plug fitting, 1x 1\/8\"-27 NPT port plug\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum mounting bracket, stainless hardware, stainless snap ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal return-style fuel systems; 4 bar (58.2 psi) static base pressure\u003c\/li\u003e\n\u003cli\u003eRated at 255lph pump flow; higher-flow pumps raise minimum pressure\u003c\/li\u003e\n\u003cli\u003eHousing-only version (20-0014) and alternate Bosch tops available separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701108291,"sku":"20-0010-01","price":137.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0010-01-29454200471622_25058256-4298-4a34-97fe-ede0c07d87b5.jpg?v=1786717243"},{"product_id":"radium-engineering-fuel-pressure-regulator-w-3-bar-bosch-reg-universal-20-0010-00","title":"Radium Engineering Fuel Pressure Regulator W\/ 3 Bar Bosch Reg | Universal (20-0010-00)","description":"\u003cp\u003e\u003cstrong\u003eMillions of Audis, VWs, Porsches, and Fords trusted this exact Bosch regulator; Radium gave it a better home.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Pressure Regulator with 3 Bar Bosch Regulator\u003c\/strong\u003e is built around a genuine OEM Bosch regulator top rated 3 bar (43.5 psi) static at 255lph, housed in an extremely compact billet 6061 aluminum body that provides a convenient package for plumbing and mounting. \u003ccite index=\"72-1\"\u003eThe Bosch regulator tops are vacuum referenced with a 1:1 ratio, so as intake manifold pressure changes the fuel pressure changes at the same rate, or with the vacuum reference removed a constant static fuel pressure can be achieved. The regulator body is held in the housing with a stainless steel snap ring and can easily be removed for cleaning or replacement using snap-ring pliers.\u003c\/cite\u003e The two main high pressure ports are threaded 6AN ORB, a 6AN male return port is integrated into the housing itself, and a 1\/8\" NPT female port stands ready for a gauge or pressure transducer. Arrives assembled with the Bosch unit installed.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-grade pressure regulation from the Bosch top that production cars proved by the million\u003c\/li\u003e\n\u003cli\u003e1:1 boost-referenced delivery keeping effective injector pressure constant, or static duty with the reference removed\u003c\/li\u003e\n\u003cli\u003eA serviceable design, the snap ring releasing the regulator for cleaning or replacement in minutes\u003c\/li\u003e\n\u003cli\u003eOne fewer leak point, with the return fitting machined into the housing rather than threaded on\u003c\/li\u003e\n\u003cli\u003eGauge-ready monitoring via the front 1\/8\" NPT port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Bosch 3.0 bar (43.5 psi) static regulator top, pre-installed; NOT adjustable\u003c\/li\u003e\n\u003cli\u003eBillet 6061 aluminum housing, laser etched and anodized; stainless snap retaining ring\u003c\/li\u003e\n\u003cli\u003e2x 6AN ORB high pressure ports; integrated machined 6AN male return port; 1\/8\" NPT gauge port\u003c\/li\u003e\n\u003cli\u003eIncludes 6AN male adapter fitting, 6AN ORB plug fitting, 1\/8\"-27 NPT port plug\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum mounting bracket and stainless steel mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eTwo honest notes from Radium frame the purchase. First, the ratings assume a common Walbro 255lph pump, and the exact minimum, static, and maximum pressures are influenced by pump flow, so a significantly higher flowing pump may raise minimum pressures above what is advertised, with Radium's adjustable high flow regulators the better match for big-pump systems. Second, the 3 bar top is fixed by design, which is the point: it regulates at its rating forever with OEM reliability, no set-and-drift. The snap-in architecture adds flexibility later, since aftermarket adjustable tops and unique Bosch variations like 3.5 bar snap into the same billet housing. The optional Radium fuel pressure gauge secures to the front NPT port, and the sibling version carries the other Bosch rating.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Billet aluminum FPR housing with genuine Bosch 3 bar regulator installed\u003c\/li\u003e\n\u003cli\u003e1x 6AN male adapter fitting, 1x 6AN ORB plug fitting, 1x 1\/8\"-27 NPT port plug\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum mounting bracket, stainless hardware, stainless snap ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal return-style fuel systems; 3 bar (43.5 psi) static base pressure\u003c\/li\u003e\n\u003cli\u003eRated at 255lph pump flow; higher-flow pumps raise minimum pressure\u003c\/li\u003e\n\u003cli\u003eHousing-only version (20-0014) and alternate Bosch tops available separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672701141059,"sku":"20-0010-00","price":123.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0010-00-29454200406086_f7753117-295d-467e-8a9e-b759e6672274.jpg?v=1786717244"},{"product_id":"radium-8an-orb-fpd-adapter-nissan-vq35hr-vq37vhr-vq40de-vr38dett-20-0459","title":"Radium 8AN ORB FPD Adapter | Nissan VQ35 \/ VQ37 \/ VQ40 \/ VR38 (20-0459)","description":"\u003cp\u003e\u003cstrong\u003eNissan's HR-era rails hide their damper behind a proprietary interface; this adapter translates it to 8AN ORB.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering 8AN ORB FPD Adapter for the Nissan VQ35HR, VQ37VHR, VQ40DE, and VR38DETT\u003c\/strong\u003e converts the factory fuel pulse damper location on these engines to a female 8AN ORB port: opening the position to Radium's FPD-R dampers, ORB plugs, or 8AN ORB plumbing fittings, and bringing the late VQ and GT-R fuel architecture into the serviceable AN world.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe damper position opened to modern serviceable hardware\u003c\/li\u003e\n\u003cli\u003eRadium FPD-R pulse damping available where Nissan's sealed part lived\u003c\/li\u003e\n\u003cli\u003ePlumbing and sensor options through the standard 8AN ORB interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAdapts the OEM fuel pulse damper location to female 8AN ORB (3\/4\"-16)\u003c\/li\u003e\n\u003cli\u003eFits VQ35HR, VQ37VHR, VQ40DE, and VR38DETT fuel systems\u003c\/li\u003e\n\u003cli\u003eMachined anodized aluminum; all fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003ePulse damping matters more as injectors grow, with big injectors hammering rail pressure in waves the factory damper was never sized for, and the adapter is the gateway: once the position speaks 8AN ORB, Radium's FPD-R installs with its damping matched to aftermarket flow, or the port serves plumbing duty in custom systems. The engine list spans the 370Z and G37's VQ37VHR, the late 350Z's VQ35HR, the Frontier-family VQ40DE, and the GT-R's VR38DETT, with O-ring discipline at install: lubricated, threaded home, no sealant. Companion fittings and the FPD-R sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 8AN ORB FPD adapter (20-0459)\u003c\/li\u003e\n\u003cli\u003eFPD-R damper and fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNissan VQ35HR, VQ37VHR, VQ40DE, and VR38DETT engines\u003c\/li\u003e\n\u003cli\u003e350Z HR, 370Z, G35\/G37, Frontier family, R35 GT-R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672702713923,"sku":"20-0459","price":28.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0459-28283879948358_434db418-66b3-4325-89db-7f91fa2d5e94.jpg?v=1786717280"},{"product_id":"radium-engineering-fpr-spring-wide-range-universal-18-0046","title":"Radium Engineering FPR Spring- Wide Range | Universal (18-0046)","description":"\u003cp\u003e\u003cstrong\u003eAn adjustable regulator's range lives in its spring, and this one widens it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering FPR Spring, Wide Range\u003c\/strong\u003e is the tuning spring for Radium adjustable fuel pressure regulators: swapping into the regulator to shift its adjustment window, opening base pressure settings the standard spring does not reach. The service and setup part for systems whose pressure targets sit outside the factory-fitted range.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBase pressure targets reached that the standard spring could not hold\u003c\/li\u003e\n\u003cli\u003eThe regulator matched to unusual injector, pump, or fuel-system math\u003c\/li\u003e\n\u003cli\u003eA serviceable regulator staying serviceable, springs swapping instead of regulators replacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWide range spring for Radium adjustable fuel pressure regulators\u003c\/li\u003e\n\u003cli\u003eShifts the regulator's base pressure adjustment window\u003c\/li\u003e\n\u003cli\u003eDirect service part; verify compatibility with your Radium FPR model\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRegulator springs set the force the diaphragm balances against, and the adjustment screw only moves within the spring's authority, which is why unusual targets need the spring swap rather than more screw: the wide range spring re-centers the window. Installation follows Radium's regulator service procedure, with pressure verified on a gauge after reassembly and the vacuum reference behavior confirmed before the tune leans on it. Match the spring to your specific Radium FPR model per the documentation.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Wide range FPR spring (18-0046)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRadium adjustable fuel pressure regulators (verify model compatibility)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672703991875,"sku":"18-0046","price":9.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-18-0046-29454206697542.jpg?v=1786717297"},{"product_id":"radium-fuel-hanger-fpr-block-off-universal-20-0806","title":"Radium Fuel Hanger FPR Block Off | Universal (20-0806)","description":"\u003cp\u003e\u003cstrong\u003eThe Mustang hanger's built-in regulator steps aside, and the return system steps in.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Hanger FPR Block-Off\u003c\/strong\u003e converts the Radium 2011+ Mustang fuel pump hanger from its built-in-regulator dead head configuration to a return-style system: the block-off replaces the integrated FPR, regulation moves to an external regulator at the engine, and the hanger's 6AN ORB return port comes into service carrying fuel home.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull return-style architecture on the Radium Mustang hanger platform\u003c\/li\u003e\n\u003cli\u003eExternal regulator placement at the engine, referenced where pressure matters\u003c\/li\u003e\n\u003cli\u003eThe hanger's preinstalled return port plug finally earning its replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFPR block-off for the Radium 2011+ Mustang fuel pump hanger (20-0800 family)\u003c\/li\u003e\n\u003cli\u003eConverts the integrated-regulator dead head system to return-style\u003c\/li\u003e\n\u003cli\u003eActivates the hanger's 6AN ORB return port for return line connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe hanger's integrated FPR serves most builds cleanly, regulating at the tank at a 1:1 rate, but some tuning strategies want the regulator at the engine, closer to the rails with its vacuum reference reading manifold directly, and the block-off is the conversion path: FPR out, block-off in, external regulator plumbed, and the return line landing on the hanger's 6AN ORB port through Radium's adapter fittings (sold separately). Standard ORB discipline at every step, O-rings lubricated, no sealant, and the Mustang's fuel architecture reshapes without touching the tank again.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Fuel hanger FPR block-off (20-0806)\u003c\/li\u003e\n\u003cli\u003eExternal regulator and return fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRadium 2011+ Ford Mustang fuel pump hangers (20-0800-00\/-01\/-02)\u003c\/li\u003e\n\u003cli\u003eReturn-style system conversions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672704811075,"sku":"20-0806","price":23.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0806-29454204108870_342e77aa-7148-4160-be81-d6026bf0db37.jpg?v=1786717318"},{"product_id":"radium-engineering-fuel-pressure-regulator-universal-20-0014","title":"Radium Engineering Fuel Pressure Regulator | Universal (20-0014)","description":"\u003cp\u003e\u003cstrong\u003eAlready own the regulator top? The billet housing sells without one.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Pressure Regulator, Universal (Housing Only)\u003c\/strong\u003e is the 20-0014: the same compact billet 6061 aluminum FPR housing as Radium's Bosch-topped regulators, supplied without the regulator insert for builders who already have one from another source or want a specific variation. \u003ccite index=\"72-1\"\u003eAftermarket adjustable regulator tops snap into the Radium billet housing, and unique non-adjustable Bosch variations such as 3.5 bar are available; this option includes everything needed with the exception of the regulator top.\u003c\/cite\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour chosen regulator top, OEM Bosch or aftermarket adjustable, housed in serviceable billet\u003c\/li\u003e\n\u003cli\u003eTwin 6AN ORB ports, the integrated 6AN return, and the NPT gauge port ready to plumb\u003c\/li\u003e\n\u003cli\u003eSnap-ring service keeping the top removable for cleaning or swaps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBillet 6061 aluminum FPR housing, laser etched and anodized; NO regulator top included\u003c\/li\u003e\n\u003cli\u003eAccepts Bosch OEM-style regulator inserts (3.0\/3.5\/4.0 bar variants) and compatible aftermarket adjustable tops\u003c\/li\u003e\n\u003cli\u003e2x 6AN ORB high pressure ports; integrated machined 6AN male return; 1\/8\" NPT gauge port\u003c\/li\u003e\n\u003cli\u003eIncludes 6AN male adapter fitting, 6AN ORB plug, 1\/8\"-27 NPT plug, mounting bracket, stainless hardware, stainless snap ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eThe housing-only option exists for the builds the pre-assembled versions do not fit: reusing a Bosch top pulled from a donor, running a 3.5 bar or other variation Radium does not pre-install, or snapping in an aftermarket adjustable unit while keeping Radium's plumbing architecture. The stainless snap ring holds whichever top goes in, releasing it with snap-ring pliers for cleaning or replacement, and the port set matches the assembled regulators exactly: two 6AN ORB mains, the integrated return eliminating a fitting and a leak point, and the NPT port awaiting a gauge or transducer. Pre-assembled 3 bar and 4 bar versions are the 20-0010-00 and -01.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Billet aluminum FPR housing (no regulator top)\u003c\/li\u003e\n\u003cli\u003e1x 6AN male adapter fitting, 1x 6AN ORB plug fitting, 1x 1\/8\"-27 NPT port plug\u003c\/li\u003e\n\u003cli\u003eAnodized aluminum mounting bracket, stainless hardware, stainless snap retaining ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal return-style fuel systems; user-supplied Bosch or compatible regulator top\u003c\/li\u003e\n\u003cli\u003ePre-assembled versions: 20-0010-00 (3 bar), 20-0010-01 (4 bar)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672705597507,"sku":"20-0014","price":66.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0014-29454200275014_d781620c-8e78-49b8-8b12-bd229fb776d8.jpg?v=1786717335"},{"product_id":"radium-engineering-fuel-pressure-test-kit-universal-20-0392","title":"Radium Engineering Fuel Pressure Test Kit | Universal (20-0392)","description":"\u003cp\u003e\u003cstrong\u003eFuel pressure is the tune's foundation, and the test kit reads it anywhere.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Pressure Test Kit\u003c\/strong\u003e puts a number on the system: gauge and adapter hardware for verifying fuel pressure at the rail, regulator, or test port, turning fueling guesses into measurements during diagnosis, commissioning, and tuning.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBase pressure verified before the first start of any new fuel system\u003c\/li\u003e\n\u003cli\u003eLean complaints diagnosed with numbers instead of theories\u003c\/li\u003e\n\u003cli\u003eRegulator behavior confirmed under vacuum and load reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel pressure test kit with gauge and adapter hardware\u003c\/li\u003e\n\u003cli\u003eFor rail, regulator, and test port measurement\u003c\/li\u003e\n\u003cli\u003eAll fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eEvery fuel system conversation ends at the same question, what is the pressure actually doing, and the test kit answers it at commissioning (base pressure set, reference behavior verified), at diagnosis (pressure sag under demand exposing tired pumps and clogged filters), and at tuning (delivered pressure confirming what the ECU assumes). Connect per the kit's adapters at the system's test point, observe through the operating range, and relieve pressure safely before disconnecting. The cheapest insurance a fuel system build carries.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRadium fuel pressure test kit with gauge and adapters (20-0392)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel system commissioning, diagnosis, and tuning verification\u003c\/li\u003e\n\u003cli\u003eAll fuel types\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672708022339,"sku":"20-0392","price":28.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0392-29454191067206_8429ece0-190e-4091-8466-2763edc90949.jpg?v=1786717384"},{"product_id":"radium-8an-orb-fpd-adapter-nissan-vq35de-20-0460","title":"Radium 8AN ORB FPD Adapter | Nissan VQ35DE (20-0460)","description":"\u003cp\u003e\u003cstrong\u003eThe VQ35DE's damper location converts to 8AN ORB with one adapter.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium 8AN ORB FPD Adapter for the Nissan VQ35DE\u003c\/strong\u003e opens the architecture: replacing the factory fuel pulse damper interface on the VQ35DE with an adapter presenting a female 8AN ORB port, accepting a Radium FPD, a gauge or sensor fitting, or a plug per the build's needs. The DE-generation member of Radium's VQ adapter family.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe VQ's damper location speaking modern ORB instead of proprietary hardware\u003c\/li\u003e\n\u003cli\u003eRadium FPD damping available where the factory unit lived\u003c\/li\u003e\n\u003cli\u003eGauge, sensor, and plug options through the same port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFPD adapter for the Nissan VQ35DE presenting a female 8AN ORB port\u003c\/li\u003e\n\u003cli\u003eAccepts Radium FPDs, ORB fittings, and plugs\u003c\/li\u003e\n\u003cli\u003eMachined anodized aluminum; all fuel types including E85\u003c\/li\u003e\n\u003cli\u003eDE-specific: the HR\/VHR\/VQ40\/VR38 engines use the 20-0459\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eNissan's VQ generations split their fuel hardware, which is why Radium builds the adapter per family, with this 20-0460 serving the VQ35DE while the 20-0459 covers the HR-generation and beyond; confirm the engine before ordering. The port's flexibility is the point, with a Radium FPD restoring damping for big-injector builds, a sensor fitting adding rail pressure monitoring, or a plug simply sealing the location, and Radium's DE rail installations pair the adapter with ORB plugs where the plumbing dictates. ORB discipline throughout, O-ring lubricated, no sealant.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x 8AN ORB FPD adapter for the VQ35DE (20-0460)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNissan VQ35DE (350Z, G35, and related applications)\u003c\/li\u003e\n\u003cli\u003eHR\/VHR\/VQ40DE\/VR38 engines use the 20-0459\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672708874307,"sku":"20-0460","price":33.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0460-7038083792966_ad1c34b5-9592-4457-b622-bb159ccb9fbb.jpg?v=1786717399"}],"url":"https:\/\/www.tunedbyshawn.com\/collections\/fuel-pressure-regulators.oembed","provider":"Tuned by Shawn","version":"1.0","type":"link"}