{"product_id":"hks-super-fire-racing-m40i-single","title":"HKS SUPER FIRE RACING M40i - Single","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e50003-M40I-1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eHKS Super Fire Racing Spark Plug M40i – Single\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe HKS Super Fire Racing Spark Plug M40i is a high-performance iridium spark plug engineered for maximum ignition efficiency and durability. Designed with a fine-wire iridium center electrode and a special ground electrode, it delivers a stronger, more concentrated spark for improved combustion, faster throttle response, and better overall engine performance.\u003c\/p\u003e\n\u003cp\u003eThe M40i heat range is optimized for a wide variety of modified and high-output engines, providing excellent resistance to fouling and pre-ignition while maintaining stable performance under high RPM and high-load conditions. Sold individually, these plugs are a popular upgrade for enthusiasts seeking sharper ignition and increased power in turbocharged, supercharged, or high-compression applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium Center Electrode\u003c\/strong\u003e – Fine-wire design for stronger, more focused spark\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Heat Range (M40i)\u003c\/strong\u003e – Suitable for high-performance and modified engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Combustion\u003c\/strong\u003e – Enhances throttle response and power output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Durability\u003c\/strong\u003e – Excellent resistance to fouling and wear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Plug\u003c\/strong\u003e – Sold individually for custom applications or replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"100%\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e50003-M40I-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHKS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eSuper Fire Racing Spark Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Range\u003c\/td\u003e\n\u003ctd\u003eM40i\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrode Material\u003c\/td\u003e\n\u003ctd\u003eIridium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eHKS Limited Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhats Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOne HKS Super Fire Racing M40i Spark Plug\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-performance iridium spark plug for improved ignition and combustion\u003c\/li\u003e\n\u003cli\u003eRecommended for tuned or high-output engines\u003c\/li\u003e\n\u003cli\u003eGap should be checked and adjusted to manufacturer specifications before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eReplace spark plugs following factory service intervals or when tuning\u003c\/li\u003e\n\u003cli\u003eUse anti-seize on threads and torque to the correct specification\u003c\/li\u003e\n\u003cli\u003eEstimated time: 30–90 minutes (depending on vehicle)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy Choose HKS Super Fire Racing Spark Plugs?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSuperior ignition performance and combustion efficiency\u003c\/li\u003e\n\u003cli\u003eDurable iridium construction for long service life under demanding conditions\u003c\/li\u003e\n\u003cli\u003eTrusted by enthusiasts and professional tuners worldwide\u003c\/li\u003e\n\u003c\/ul\u003e\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 What heat range is this spark plug? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is an M40i heat range, suitable for many high-performance and modified applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is this plug sold individually or as a set? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This listing is for a single spark plug. Most engines require 4, 6, or 8 plugs depending on configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is professional installation recommended? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, proper gapping and torquing are important for optimal performance and engine safety.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Ground UPS or FedEx\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 Secure HKS retail packaging\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":45113227870287,"sku":"HKS50003-M40I-1","price":27.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/HKS_Super_Fire_Racing_M40i.png?v=1776719866","url":"https:\/\/www.blackopsautoworks.com\/products\/hks-super-fire-racing-m40i-single","provider":"Black Ops Auto Works","version":"1.0","type":"link"}