{"product_id":"gsc-p-d-subaru-ej205-ej207-ej257-manganese-bronze-exhaust-valve-guide-stopper-style-set-of-240","title":"GSC P-D Subaru EJ205\/EJ207\/EJ257 Manganese Bronze Exhaust Valve Guide Stopper Style - Set of 240","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eB3025\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 - Set of 240 (1998-2021 Impreza WRX\/STI)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eGSC Power-Division manganese bronze exhaust valve guides in stopper style come as a set of 240 for Subaru EJ205 EJ207 and EJ257 engines in Impreza WRX and STI models. These guides provide exact fitment with secure valve stem seal retention under extreme heat and rpm. Engine builders rely on them for consistent valve motion in turbocharged applications.\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 Delivers wear resistance and thermal conductivity to handle exhaust side temperatures in EJ turbo engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStopper Style Design:\u003c\/strong\u003e Locks valve seals in position to prevent blow-by and maintain compression during high boost runs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Dimensions:\u003c\/strong\u003e Guide OD 14.000mm ID 8.035mm length 46.00mm for drop-in compatibility with stock or ported heads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk Set of 240:\u003c\/strong\u003e Supplies 30 full engine sets of 8 exhaust guides ideal for race shops or multiple rebuilds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Volume Manufacturing:\u003c\/strong\u003e Ensures consistent quality with interference fit for press installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eGuides require honing to 8.050-8.055mm finished bore after installation\u003c\/li\u003e\n\u003cli\u003ePair with GSC intake guides B3024 for complete valvetrain refresh\u003c\/li\u003e\n\u003cli\u003ePackaged securely to prevent damage during transit\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\u003eUse valve guide press tool and freeze plug method for controlled insertion depth\u003c\/li\u003e\n\u003cli\u003eCompatible with stock heads bronze seats and oversized valves up to 1.500in\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\u003c\/td\u003e\n\u003ctd\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2001\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI (JDM GC8 EJ207)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI (JDM GDB 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 WRX STI drag and rally engines worldwide\u003c\/li\u003e\n\u003cli\u003eFocus on direct-fit valvetrain parts for Subaru turbo platforms\u003c\/li\u003e\n\u003cli\u003eEngineered tolerances reduce guide wear and valve chatter\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 Which Subaru engines use these exhaust guides?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Designed specifically for EJ205 EJ207 EJ257 exhaust positions in USDM and JDM Impreza WRX STI heads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Why manganese bronze over cast iron?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Bronze withstands higher exhaust temperatures with better lubrication retention and less galling on chrome valves\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What tools are needed for install?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Valve guide driver kit head freezer and Serdi-style hone for post-install finish\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 \/ 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 plastic tray in 8 x 6 x 2 inch box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.75 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GSC Power Division","offers":[{"title":"Default Title","offer_id":40772311842895,"sku":"GSCB3025","price":1448.36,"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-set-of-240-valve-guides-gsc-power-division.jpg?v=1717523198","url":"https:\/\/www.blackopsautoworks.com\/products\/gsc-p-d-subaru-ej205-ej207-ej257-manganese-bronze-exhaust-valve-guide-stopper-style-set-of-240","provider":"Black Ops Auto Works","version":"1.0","type":"link"}