{"product_id":"radium-fuel-rail-plumbing-kit-1994-2005-mazda-miata-20-0422-20-0423","title":"Radium Fuel Rail Plumbing Kit | 1994-2005 Mazda Miata (20-0422\/20-0423)","description":"\u003cp\u003e\u003cstrong\u003eThe Radium Miata rail has the ports; this kit is the plug-and-play bridge back to your factory fuel lines.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA bare aftermarket rail leaves you sourcing fittings and hose to meet the OEM system. The \u003cstrong\u003eRadium Engineering Fuel Rail Plumbing Kit\u003c\/strong\u003e for the 1994-2005 Miata closes that gap with a chassis-specific package for each generation: the 94-97 kit (20-0422) retains the OEM fuel pressure regulator and replaces the feed and return hoses, while the 99-05 kit (20-0423) retains the OEM fuel pulse damper and feed hose. Both bolt to the Radium 20-0369 fuel rail for a factory-clean connection with no custom fabrication. Pick your generation and plumb it once.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA plug-and-play rail install with the OEM lines meeting the Radium rail cleanly\u003c\/li\u003e\n\u003cli\u003eFactory pressure regulation retained, so the stock fuel map logic stays intact\u003c\/li\u003e\n\u003cli\u003eFresh hoses replacing decades-old rubber in the spots this kit renews\u003c\/li\u003e\n\u003cli\u003eAn afternoon install instead of a fitting-sourcing project\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422 (1994-1997): retains the OEM fuel pressure regulator, replaces the fuel feed and return hoses\u003c\/li\u003e\n\u003cli\u003e20-0422 contents: 8AN ORB to 5\/16\" barb fitting, 8AN ORB to OEM FPR fitting (20-0301), 8AN ORB plug, and Radium 5\/16\" fuel hose\u003c\/li\u003e\n\u003cli\u003e20-0423 (1999-2005): retains the OEM fuel pulse damper and fuel feed hose\u003c\/li\u003e\n\u003cli\u003eBoth designed for the Radium 20-0369 Mazda 1.8L BP fuel rail (sold separately)\u003c\/li\u003e\n\u003cli\u003eAdapts the rail's 8AN ORB ports to the factory Miata fuel system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eEach generation gets its own logic because Mazda changed the fuel architecture between NA and NB. On 94-97 cars, the return-style system's OEM regulator carries over, with the kit's 20-0301 adapter mating it to the rail's ORB port, the barb fitting and fresh 5\/16\" hose handling the feed, and the ORB plug closing the unused port. On 99-05 cars, the factory pulse damper stays in service, screwing into the Radium rail through the kit's adapters while the OEM feed hose is reused. One clearance note straight from Radium for the 99-05 kit: if the car is equipped with EGR, it must be removed for the OEM fuel pulse damper to fit. Both kits assume the Radium rail is already on the engine and the rest of the factory fuel system is stock; builds moving to aftermarket regulators or larger feed lines should skip this kit and plumb the rail's 8AN ORB ports directly with Radium adapter fittings instead.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422: 1x 8AN ORB to 5\/16\" barb fitting, 1x 8AN ORB to OEM FPR fitting, 1x 8AN ORB plug, Radium 5\/16\" fuel hose\u003c\/li\u003e\n\u003cli\u003e20-0423: adapters and hardware to retain the OEM pulse damper and feed hose on the Radium rail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e20-0422: 1994-1997 Mazda Miata (1.8L BP) with the Radium 20-0369 fuel rail\u003c\/li\u003e\n\u003cli\u003e20-0423: 1999-2005 Mazda MX-5 Miata (1.8L BP) with the Radium 20-0369 fuel rail; EGR removal required for OEM damper fitment if equipped\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"1994-1997 Miata","offer_id":43672691572803,"sku":"20-0422","price":47.45,"currency_code":"USD","in_stock":true},{"title":"1998-2005 Miata","offer_id":43672691605571,"sku":"20-0423","price":56.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0422-1994-1997-miata-14642147885126_835fe389-7ab8-4e33-8edf-d2800d360307.jpg?v=1786717079","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-fuel-rail-plumbing-kit-1994-2005-mazda-miata-20-0422-20-0423","provider":"Tuned by Shawn","version":"1.0","type":"link"}