{"product_id":"hks-super-fire-racing-m40g","title":"HKS SUPER FIRE RACING M40G","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e50003-M40G\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 4957266720301\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eHKS Super Fire Racing M40G Spark Plug 2002-2021 Subaru Impreza WRX STI Forester Legacy\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eHKS Super Fire Racing M40G delivers high-performance ignition for turbocharged Subaru EJ20 EJ25 engines. It fits 2002-2021 Impreza WRX STI Forester XT Legacy GT Outback XT models. Stronger spark improves combustion efficiency throttle response and power under high boost RPM.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine wire center electrode:\u003c\/strong\u003e Promotes stable ignition kernel growth for complete fuel burn and consistent power delivery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRacing heat range 40:\u003c\/strong\u003e Resists fouling and handles extreme cylinder temperatures in boosted applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel alloy construction:\u003c\/strong\u003e Provides extended service life in competition environments with repeated heat cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge ground electrode design:\u003c\/strong\u003e Shields flame kernel to prevent pre-ignition damage while maintaining spark focus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-gapped specification:\u003c\/strong\u003e Ensures drop-in compatibility with OEM specs for Subaru EJ20 EJ25 turbo engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSold as single plug order quantity needed for full set replacement\u003c\/li\u003e\n\u003cli\u003eUse anti-seize on threads during installation to prevent galling\u003c\/li\u003e\n\u003cli\u003eShips in protective foam insert box dimensions 3.5 x 1 x 1 inches\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\u003eTorque to 18-22 ft-lbs using thin wall socket to avoid cracking porcelain\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM coil packs and wiring no adapters required\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\u003e2004-2013\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003eXT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eLegacy\u003c\/td\u003e\n\u003ctd\u003e2.5 GT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eOutback\u003c\/td\u003e\n\u003ctd\u003eXT\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\u003eWRX STI\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose HKS?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHKS pioneered JDM tuning since 1973 with motorsport-proven components\u003c\/li\u003e\n\u003cli\u003ePlugs tested in endurance racing for reliability under extreme conditions\u003c\/li\u003e\n\u003cli\u003ePrecision-machined in Japan for exact OEM thread fit and gap accuracy\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 Does this fit 2004-2007 Subaru STI EJ25 turbo?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes direct replacement for OEM plugs in all EJ25 turbo Impreza STI models from 2004-2007\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material is the electrode made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Racing-grade nickel alloy center wire and ground strap for heat resistance and anti-fouling properties\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and gap spec?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 1-year manufacturer warranty pre-gapped to 0.8-0.9mm verify with gap tool before final torque\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 Compact cardboard box with foam insert 3.5 x 1 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 lb\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":43824875601999,"sku":"HKS50003-M40G","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/hks-super-fire-racing-m40g-hks.jpg?v=1767420768","url":"https:\/\/www.blackopsautoworks.com\/products\/hks-super-fire-racing-m40g","provider":"Black Ops Auto Works","version":"1.0","type":"link"}