{"product_id":"gsc-p-d-subaru-ej205-ej207-ej257-manganese-bronze-exhaust-valve-guide-stopper-style-single","title":"GSC P-D Subaru EJ205\/EJ207\/EJ257 Manganese Bronze Exhaust Valve Guide Stopper Style - Single","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e3025\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eGSC P-D Subaru EJ205 EJ207 EJ257 Manganese Bronze Exhaust Valve Guide Stopper Style - Single 2002-2021 Impreza WRX STI\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis GSC Power-Division manganese bronze exhaust valve guide stopper fits Subaru EJ205 EJ207 and EJ257 engines found in WRX and STI models. Designed as a single unit for one exhaust valve position it secures the guide with exact tolerances to handle high heat and boost levels. Ideal for engine rebuilds it prevents guide migration and supports reliable valve train operation under demanding conditions.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManganese Bronze Material:\u003c\/strong\u003e Provides exceptional wear resistance and thermal conductivity suited for exhaust valve environments in turbocharged Subaru engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStopper Style Design:\u003c\/strong\u003e Locks the valve guide in place reducing movement and extending component life during high RPM operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision CNC Machined:\u003c\/strong\u003e Matches OEM specifications for seamless integration with stock or aftermarket cylinder heads and valves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEJ205 EJ207 EJ257 Compatible:\u003c\/strong\u003e Direct fit for popular Subaru turbo engines in WRX and STI applications from 2002 to 2021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Exhaust Unit:\u003c\/strong\u003e Allows targeted replacement for individual valves simplifying maintenance on performance builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSold as single piece for exhaust position only pair with intake guides for complete set\u003c\/li\u003e\n\u003cli\u003eInspect cylinder head during installation for proper guide seating\u003c\/li\u003e\n\u003cli\u003eLightweight component ships in protective packaging to prevent damage\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\u003eRemove cylinder head and press out old guides before installing new stopper\u003c\/li\u003e\n\u003cli\u003eCompatible with GSC valves guides and OEM hardware use assembly lube on guide\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\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX\u003c\/td\u003e\n\u003ctd\u003eSTI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza WRX\u003c\/td\u003e\n\u003ctd\u003eTR\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\u003eSTI Hatchback\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\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003e-\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 racing with Subaru teams worldwide\u003c\/li\u003e\n\u003cli\u003eHigh-strength materials tested for extreme boost and heat cycles\u003c\/li\u003e\n\u003cli\u003eEngineered for direct bolt-on reliability in performance Subaru builds\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 fit 2004-2021 Subaru STI models with EJ257 engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes it directly fits all EJ257 exhaust positions in 2004-2021 Impreza WRX STI cylinder heads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What makes manganese bronze suitable for this valve guide stopper?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Manganese bronze offers superior hardness and resistance to exhaust gas corrosion while maintaining tight tolerances under thermal expansion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is there a warranty on this GSC part?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e GSC Power-Division provides a limited lifetime warranty against manufacturing defects when installed by certified technicians\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 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 Protective padded envelope 4 x 4 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":39735841751119,"sku":"GSC3025","price":6.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/gsc-p-d-subaru-ej205ej207ej257-manganese-bronze-exhaust-valve-guide-stopper-style-single-valve-guides-gsc-power-division.jpg?v=1717523371","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-subaru-ej205-ej207-ej257-manganese-bronze-exhaust-valve-guide-stopper-style-single","provider":"Black Ops Auto Works","version":"1.0","type":"link"}