{"product_id":"gsc-p-d-subaru-ej-series-ej205-ej207-ej257-37mm-head-1mm-chrome-polished-intake-valve-set-of-8","title":"GSC P-D Subaru EJ Series EJ205\/EJ207\/EJ257 37mm Head (+1mm) Chrome Polished Intake Valve - Set of 8","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e2014-8\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e GSC2014-8\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGSC Power-Division 1998-2021 Subaru Impreza WRX STI EJ205\/EJ207\/EJ257 37mm Head (+1mm) Chrome Polished Intake Valve - Set of 8\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGSC Power-Division chrome polished intake valves feature a 37mm head diameter and +1mm length for Subaru EJ205 EJ207 EJ257 engines in 1998-2021 Impreza WRX and STI models. This set of 8 delivers increased airflow to support higher boost and RPM for greater horsepower gains. Engineered for durability in turbocharged performance applications these valves pair with high-lift cams and upgraded springs.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e37mm Head Diameter:\u003c\/strong\u003e +1mm oversize over stock design increases intake airflow for improved throttle response and power output across the RPM range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+1mm Valve Length:\u003c\/strong\u003e Extended stem matches GSC +1mm valve springs and high-lift camshafts without clearance issues\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome Polished Stems:\u003c\/strong\u003e Smooth finish reduces friction promotes oil retention and extends valve guide life under high heat conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Piece Forged Construction:\u003c\/strong\u003e 21-4N stainless steel withstands extreme boost and RPM with superior fatigue resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwirl Polished Underhead:\u003c\/strong\u003e Enhances flow efficiency and heat dissipation for consistent performance in demanding race or street use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRequires valve seat machining due to oversize head diameter\u003c\/li\u003e\n\u003cli\u003ePair with GSC valve springs for optimal spring pressure and lift\u003c\/li\u003e\n\u003cli\u003eInspect cylinder head ports for compatibility with 37mm valves\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\u003ePerform 3-angle valve job on seats for proper sealing with oversize heads\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or GSC titanium retainers and spring kits\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\u003e2002-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI\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\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eSTI (JDM EJ207)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose GSC Power-Division?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven in professional Subaru racing with multiple championship wins\u003c\/li\u003e\n\u003cli\u003eManufactured with precision CNC machining for exact tolerances\u003c\/li\u003e\n\u003cli\u003eTested to 12000 RPM on engine dynos for real-world reliability\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 these valves fit 2008-2021 STI models with EJ257 engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes these are direct fit for all EJ257 equipped STI models from 2004-2021 including USDM and JDM variants\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are the valves made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e One-piece forged 21-4N stainless steel heat treated for high-temperature strength with chrome polished stems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty on these valves?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e GSC Power-Division provides a limited lifetime warranty against manufacturing defects when installed by certified professionals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp;amp. Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or USPS Priority\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 Foam-lined protective box 12 x 8 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.8 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":43805341155407,"sku":"GSC2014-8","price":166.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/gsc-p-d-subaru-ej-series-ej205ej207ej257-37mm-head-1mm-chrome-polished-intake-valve-set-of-8-gsc-power-division.jpg?v=1767419549","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-subaru-ej-series-ej205-ej207-ej257-37mm-head-1mm-chrome-polished-intake-valve-set-of-8","provider":"Black Ops Auto Works","version":"1.0","type":"link"}