{"product_id":"radium-top-feed-conversion-primary-fuel-rail-mazda-20b-rew-20-0464","title":"Radium Top Feed Conversion Primary Fuel Rail | Mazda 20B-REW (20-0464)","description":"\u003cp\u003e\u003cstrong\u003eThree rotors, side-feed injectors, 1990s parts support: the Cosmo's primary rail problem, solved in billet.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Top Feed Conversion Primary Fuel Rail for the Mazda 20B-REW\u003c\/strong\u003e serves the three-rotor originally found in the 1990-1995 Mazda\/Eunos Cosmo: a high flow aluminum rail, anodized black for compatibility with all popular fuel types including E85, manufactured with a large internal bore supporting all necessary engine power requirements, and converting the primary injector positions to common top feed fuel injectors. The rail that frees a 20B build from hunting discontinued side-feed injectors. Injectors sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe modern injector catalog opened to the 20B's primary positions\u003c\/li\u003e\n\u003cli\u003eDelivery headroom for three-rotor power, single turbo or triple\u003c\/li\u003e\n\u003cli\u003eE85 confidence through the anodized aluminum construction\u003c\/li\u003e\n\u003cli\u003eServiceable, ORB-ported plumbing replacing 30-year-old factory hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTop feed conversion primary rail for the Mazda 20B-REW (1990-1995 Cosmo)\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminum, anodized black; large internal bore; 8AN ORB ports\u003c\/li\u003e\n\u003cli\u003eConverts primary positions to common top feed injectors (not included)\u003c\/li\u003e\n\u003cli\u003eAll popular fuel types including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eConversion rails change the injector style, which is the entire point on the 20B, whose factory side-feed primaries long ago fell out of production support, and Radium's install pattern handles both directions: aftermarket top feed injectors use the provided injector seats pressed into cleaned OEM ports with lubricated O-rings, while OEM style injectors skip the seat step per the instructions. Plumbing configures to the rail's 8AN ORB ports per your system, with the secondary rail (20-0465) completing the engine and the 8AN FPD-R damper a natural companion in the primary feed. Verify injector compatibility against Radium's documentation before ordering, and follow the leak-check discipline at first start.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Anodized top feed conversion primary rail with injector seats and mounting hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and plumbing fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMazda 20B-REW three-rotor (1990-1995 Mazda\/Eunos Cosmo, swaps)\u003c\/li\u003e\n\u003cli\u003ePairs with the 20-0465 secondary rail\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672702648387,"sku":"20-0464","price":180.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0464-11950976139334_5d1b802d-e76e-4cee-8cac-8c60e003bdfe.jpg?v=1786717279","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-top-feed-conversion-primary-fuel-rail-mazda-20b-rew-20-0464","provider":"Tuned by Shawn","version":"1.0","type":"link"}