{"product_id":"radium-engineering-fuel-rail-2001-2005-honda-civic-si-and-2002-2006-acura-rsx-type-s-20-0230-02","title":"Radium Engineering Fuel Rail | 2001-2005 Honda Civic Si and 2002-2006 Acura RSX Type-S (20-0230-02)","description":"\u003cp\u003e\u003cstrong\u003eEvery K-series intake manifold swap eventually asks the same question: is the fuel rail keeping up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Fuel Rail for the Honda K-Series\u003c\/strong\u003e answers it for good: a large 0.69\" internal bore supporting all necessary engine power requirements, CNC machined from extruded 6063 aluminum, media blasted, black anodized, and laser etched. This is an upgrade rail, meaning the 14mm ID injector bores match OEM so factory injectors reinstall directly, and it fits every OEM Honda K-series intake manifold (RBC, RBB, RRC, PRB, and more): if the manifold fits the OEM rail, it fits this one. Phenolic thermal insulating washers isolate the rail from manifold heat, stainless hardware is included, and all fuels including E85 are welcome. Not compatible with the direct-injected K20C1.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRail volume that stays ahead of the injectors on boosted and high-rpm K builds\u003c\/li\u003e\n\u003cli\u003eUniversal manifold compatibility across the RBC\/RBB\/RRC\/PRB alphabet\u003c\/li\u003e\n\u003cli\u003eCooler fuel courtesy of phenolic washers thermally isolating the rail from the manifold\u003c\/li\u003e\n\u003cli\u003eFactory injectors reinstalled without drama in true 14mm OEM-spec bores\u003c\/li\u003e\n\u003cli\u003ePort flexibility for a damper, gauge, or custom plumbing as the build evolves\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge 0.69\" internal bore; CNC machined extruded 6063 aluminum, media blasted, black anodized, laser etched\u003c\/li\u003e\n\u003cli\u003eUpgrade rail: 14mm ID injector bores accept factory or OEM-equivalent injectors (same height, matching upper and lower O-ring dimensions)\u003c\/li\u003e\n\u003cli\u003eCompatible with all OEM Honda K-series intake manifolds (RBC, RBB, RRC, PRB, etc.)\u003c\/li\u003e\n\u003cli\u003eReuses OEM insulating spacers (Honda 16638-PNA-000); phenolic thermal insulating washers included\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware; all fuel types including E85\u003c\/li\u003e\n\u003cli\u003eNOT compatible with the direct-injected K20C1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eRadium's rail taxonomy matters here: upgrade rails keep the OEM injector interface, while top feed conversion rails change injector styles, and this K-series rail is firmly the former, so injector changes must stay OEM-equivalent in height and O-ring dimensions, with flow rates chosen by your tuner and dimensions confirmed by the injector manufacturer. The rail-only kit suits custom plumbing; for the stock feed line, Radium's plumbing kit (20-0230-PK, sold separately) adds the extended SAE quick connect that clears the OEM coolant hose plus port plugs. Installation is documented down to the torque spec: OEM spacers position the assembly, and the included M8 hardware torques to 10 ft-lbs. Pre-lubricate every O-ring, prime with key cycles, and leak-check before and after first start.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized, laser etched K-series fuel rail\u003c\/li\u003e\n\u003cli\u003eStainless steel mounting hardware\u003c\/li\u003e\n\u003cli\u003ePhenolic thermal insulating washers\u003c\/li\u003e\n\u003cli\u003ePlumbing kit 20-0230-PK sold separately for factory feed line connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2001-2005 Honda Civic Si (EP3) and 2002-2006 Acura RSX \/ RSX Type-S (K20)\u003c\/li\u003e\n\u003cli\u003eAll K-series engines with port-injection OEM manifolds (K20\/K24); K-swap applications\u003c\/li\u003e\n\u003cli\u003eNOT compatible with the direct-injected K20C1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672694915139,"sku":"20-0230-02","price":142.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0230-02-29454206763078_3737e811-3770-49d9-a87b-1b2b772589c7.jpg?v=1786717129","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-engineering-fuel-rail-2001-2005-honda-civic-si-and-2002-2006-acura-rsx-type-s-20-0230-02","provider":"Tuned by Shawn","version":"1.0","type":"link"}