{"product_id":"cobb-08-21-subaru-sti-fuel-pressure-regulator-kit","title":"Cobb 08-21 Subaru STi Fuel Pressure Regulator Kit","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eB315200\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 700424673650\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eCOBB Adjustable Fuel Pressure Regulator Kit – 2008-2021 Subaru STI \u0026amp; 2008-2014 WRX\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe COBB 315200 replaces the factory regulator with a billet aluminum Aeromotive unit on 2008-2021 Subaru STI (EJ257) and 2008-2014 WRX (EJ255) for precise fuel delivery. Adjust base pressure from 30-70 psi with true 1:1 manifold reference to eliminate droop under boost, supporting E85, flex fuel, large injectors, and upgraded pumps. Kit includes firewall bracket, braided stainless line, and all fittings for direct bolt-on installation.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAeromotive 13129 Regulator:\u003c\/strong\u003e True 1:1 rising rate maintains fuel pressure psi-for-psi with manifold pressure across 30-70 psi range for consistent fueling on high-power setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC Billet Firewall Bracket:\u003c\/strong\u003e Black anodized 6061 aluminum ensures secure mounting with perfect OEM-like fitment on STI and WRX firewalls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBraided Stainless -6 AN Line:\u003c\/strong\u003e Pre-assembled PTFE-lined line with fittings delivers reliable flow without leaks or restrictions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull 1:1 Manifold Reference:\u003c\/strong\u003e Prevents pressure drop during boost for stable AFRs on stock or aftermarket fuel systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA:\u003c\/strong\u003e Aeromotive regulator and COBB components backed by lifetime warranty against defects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFits all 2008-2021 STI (EJ257) and 2008-2014 WRX (EJ255) with stock or aftermarket fuel rails and pumps.\u003c\/li\u003e\n\u003cli\u003eAccessport tuning required after pressure adjustments to match fuel maps.\u003c\/li\u003e\n\u003cli\u003eIn stock - ships same or next business day via UPS\/FedEx Ground.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003e45-60 minute install: Mount firewall bracket, route braided line, replace factory regulator.\u003c\/li\u003e\n\u003cli\u003eFull color instructions and all hardware included; compatible with stock lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eLaunch Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX STI\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX STI\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX STI\u003c\/td\u003e\n\u003ctd\u003eSpecial Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2014\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose COBB Tuning?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e#1 selling adjustable FPR for EJ25 Subaru models over 20 years.\u003c\/li\u003e\n\u003cli\u003eEngineered and manufactured in the USA for direct fitment.\u003c\/li\u003e\n\u003cli\u003eProven on 600-1000+ hp EJ builds worldwide with Aeromotive integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this work on 2015+ WRX FA20?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e No, use COBB 315250 kit for FA20 WRX STI; this is EJ25-specific.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What materials are used in construction?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Billet 6061 aluminum bracket (black anodized), Aeromotive regulator body, and PTFE-lined braided stainless steel line.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty and tuning is needed?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Lifetime against defects; Accessport tuning required post-install for pressure changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS\/FedEx Ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Official COBB retail box, 10\" x 8\" x 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.9 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COBB","offers":[{"title":"Default Title","offer_id":43917262487631,"sku":"COBB315200","price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/cobb-08-21-subaru-sti-fuel-pressure-regulator-kit-cobb.jpg?v=1765843677","url":"https:\/\/www.blackopsautoworks.com\/products\/cobb-08-21-subaru-sti-fuel-pressure-regulator-kit","provider":"Black Ops Auto Works","version":"1.0","type":"link"}