{"product_id":"radium-engineering-subaru-ej-top-feed-fuel-rail-conversion-kit-2004-2014-subaru-wrx-and-2004-2021-subaru-wrx-sti-20-0568-02","title":"Radium Subaru EJ Top Feed Fuel Rail Conversion Kit | 2004-2006 Subaru WRX STI (20-0568-02)","description":"\u003cp\u003e\u003cstrong\u003eSide feed injectors capped the EJ257's future the day it left the factory; this kit removes the cap.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering Subaru EJ Top Feed Fuel Rail Conversion Kit\u003c\/strong\u003e converts the OEM side feed injector setup to top feed, opening the high-flow injector catalog the side feed world never got. The rails are CNC machined from solid 6061 aluminum, black anodized and laser engraved, with large internal bores supporting all necessary engine power requirements and 14mm ID injector bores. Four billet anodized injector seats provide sealed receptacles for top feed injectors with 14mm lower O-rings, each rail carries three 8AN ORB threaded ports (6 total), and press-fit phenolic spacers thermally insulate against intake manifold heat transfer. All fuels including E85. Injectors sold separately, and one warning drives the whole purchase: do NOT buy \"WRX fitment\" injectors for this kit.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe full modern top feed injector catalog unlocked on side feed EJ engines\u003c\/li\u003e\n\u003cli\u003eFueling headroom for the big-turbo and E85 builds the EJ257 was destined for\u003c\/li\u003e\n\u003cli\u003eBoost-sealed injector bases via the billet anodized seat receptacles\u003c\/li\u003e\n\u003cli\u003eSix 8AN ORB ports carrying feed, crossover, regulator, damper, and gauge duty\u003c\/li\u003e\n\u003cli\u003eCooler fuel through press-fit phenolic isolation from manifold heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConverts the OEM side feed injector setup to top feed; high-flow injectors NOT included\u003c\/li\u003e\n\u003cli\u003eCNC machined solid 6061 aluminum rails, black anodized, laser engraved, large internal bore\u003c\/li\u003e\n\u003cli\u003e14mm ID injector bores; 4x billet anodized, laser etched injector seats for injectors with 14mm lower O-rings\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB threaded ports per rail (6 total)\u003c\/li\u003e\n\u003cli\u003ePress-fit phenolic spacers insulate intake manifold heat transfer; stainless hardware\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\u003eThe injector warning deserves its own paragraph, because it catches builders constantly: \"WRX fitment\" and \"WRX top feed\" injectors are made for the factory top feed cars' geometry and do NOT fit this conversion, so injector selection follows the kit's actual specification, a top feed injector with a 14mm lower O-ring seating into the Radium billet seats, with flow rates from your tuner and exact dimensions confirmed with the injector manufacturer. Fitment follows the injector style rather than the badge: USDM 2004-2006 Impreza WRX STI, 2005-2006 Legacy GT and Outback XT, and 2004-2005 Forester XT that came with side feed injectors, with country of origin determining which engines qualify. Port fittings are selected per your plumbing plan, and Radium's standing clearance advice applies around ports destined for regulators or dampers.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x Black anodized, laser engraved 6061 aluminum top feed conversion rails\u003c\/li\u003e\n\u003cli\u003e4x Billet anodized, laser etched injector seats (14mm lower O-ring receptacles)\u003c\/li\u003e\n\u003cli\u003ePress-fit phenolic thermal spacers\u003c\/li\u003e\n\u003cli\u003eStainless steel hardware\u003c\/li\u003e\n\u003cli\u003eInjectors and port fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2004-2006 Subaru Impreza WRX STI (USDM, side feed injector cars)\u003c\/li\u003e\n\u003cli\u003e2005-2006 Legacy GT and Outback XT; 2004-2005 Forester XT (side feed injector cars)\u003c\/li\u003e\n\u003cli\u003eTop feed injectors with 14mm lower O-rings; do NOT purchase \"WRX fitment\" injectors\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695177283,"sku":"20-0568-02","price":218.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0568-02n_0a2303c7-5fd3-4187-a616-fa9b2fa433f0.jpg?v=1786717137","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-engineering-subaru-ej-top-feed-fuel-rail-conversion-kit-2004-2014-subaru-wrx-and-2004-2021-subaru-wrx-sti-20-0568-02","provider":"Tuned by Shawn","version":"1.0","type":"link"}