{"product_id":"hks-super-fire-racing-m45il-single","title":"HKS SUPER FIRE RACING M45iL - Single","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e50003-M45IL-1\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eHKS SUPER FIRE RACING M45iL Spark Plug - Single for Subaru Impreza WRX STI 2004-2021 Legacy GT 2005-2009\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eHKS Super Fire Racing M45iL is a single iridium spark plug engineered for high-revving performance engines. It fits Subaru Impreza WRX STI Forester XT Legacy GT Nissan 350Z G35 Mazda RX-8 and more delivering sharper ignition for improved throttle response combustion efficiency and horsepower. Replace worn plugs to restore peak engine performance and reliability in turbocharged setups.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8mm Pure Iridium Tip:\u003c\/strong\u003e Provides focused spark concentration for reliable ignition even at 10,000+ RPM reducing misfires in demanding racing conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45mm Reach 14mm Thread:\u003c\/strong\u003e Exact OEM-spec dimensions ensure drop-in compatibility with gasket seat design for secure seal and heat dissipation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Grooved Ground Electrode:\u003c\/strong\u003e Creates air turbulence around the spark improving flame kernel growth for fuller combustion and power output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjected Insulator:\u003c\/strong\u003e Resists carbon fouling and maintains consistent heat range during extended track sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Thermal Conductivity:\u003c\/strong\u003e Pure iridium alloy withstands extreme cylinder temperatures for longer lifespan versus copper or platinum plugs.\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 engine set (4 or 6 depending on model).\u003c\/li\u003e\n\u003cli\u003ePre-gapped to 0.8mm. Verify and adjust if necessary before installation.\u003c\/li\u003e\n\u003cli\u003eStore in original packaging to protect fine tip from 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\u003eTorque to 18-22 ft-lbs using thin-wall deep socket to avoid insulator damage.\u003c\/li\u003e\n\u003cli\u003eApply anti-seize compound to threads. Compatible with stock coils and wiring.\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\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI 2.5L\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 2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2012\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eForester\u003c\/td\u003e\n\u003ctd\u003eXT 2.5L\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\u003eGT 2.5L\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 2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2008\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e350Z\u003c\/td\u003e\n\u003ctd\u003e3.5L V6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2007\u003c\/td\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eG35\u003c\/td\u003e\n\u003ctd\u003e3.5L V6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2011\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eRX-8\u003c\/td\u003e\n\u003ctd\u003e1.3L Rotary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003-2005\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer Evolution\u003c\/td\u003e\n\u003ctd\u003eEvo 8 2.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006-2007\u003c\/td\u003e\n\u003ctd\u003eMitsubishi\u003c\/td\u003e\n\u003ctd\u003eLancer Evolution\u003c\/td\u003e\n\u003ctd\u003eEvo 9 2.0L\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\u003e45+ years of motorsport development powers real-world track-proven components.\u003c\/li\u003e\n\u003cli\u003eJapanese manufacturing ensures tight tolerances and consistent quality.\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for boosted and high-output engines like EJ25 and VQ35.\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 my 2008+ Subaru WRX STI?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes it directly replaces OEM plug in all 2.5L EJ25 turbo models from 2004-2021 with 14mm x 45mm specs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material is the center electrode?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 99.9% pure iridium alloy with 0.8mm diameter for superior durability and spark focus versus standard nickel plugs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and gap setting?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e HKS offers limited warranty against defects. Ships pre-gapped at 0.8mm suitable for most performance tunes.\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 retail box 4 x 3 x 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.11 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45029618974799,"sku":"HKS50003-M45IL-1","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/hks-super-fire-racing-m45il-single-hks.png?v=1774880561","url":"https:\/\/www.blackopsautoworks.com\/products\/hks-super-fire-racing-m45il-single","provider":"Black Ops Auto Works","version":"1.0","type":"link"}