{"product_id":"apr-aprz1003100-ea888-3-4-ea855-2-and-ea824-iridium-pro-spark-plug-heat-range-9","title":"APR - aprZ1003100 - EA888.3\/4, EA855.2 and EA824 Iridium Pro Spark Plug, Heat Range 9","description":"Refresh your ignition system in one shot with APR Iridium Pro Spark Plugs and pair with APR Ignition Coils – engineered to work together for a stronger, more consistent spark. Each is a direct-fit upgrade designed to support smoother idle, sharper throttle response, and reliable performance under heat and load—whether you’re stock or running higher boost and power upgrades.\n14X26.5X16MM - Heat Range 9\nAlways check sizes, gap, and heat range specs before installing. Installation of the wrong length plug can cause damage to the engine. You must verify this before installing the plug.\n\u003cul\u003e\n  \u003cli\u003e152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum.\u003c\/li\u003e\n  \u003cli\u003eHeat range 9 spark plug (Similar: Bosch 3, Brisk 10, Denso 27, and NGK 9)\u003c\/li\u003e\n  \u003cli\u003eOptimized electrode design for hard to ignite fuels, such as ethanol\u003c\/li\u003e\n  \u003cli\u003eDesigned for high performance \/ tuned vehicle applications\u003c\/li\u003e\n  \u003cli\u003eCooler operating temperature than stock plugs\u003c\/li\u003e\n  \u003cli\u003eResists preignition better than stock plugs\u003c\/li\u003e\n  \u003cli\u003eAn excellent match for APR ignition coils\u003c\/li\u003e\n  \u003cli\u003eStronger than copper and platinum\u003c\/li\u003e\n  \u003cli\u003ePerfect for upgraded APR vehicles\u003c\/li\u003e\n  \u003cli\u003eLower required supplied voltage\u003c\/li\u003e\n  \u003cli\u003eNon-projected insulator design\u003c\/li\u003e\n  \u003cli\u003eThread diameter: 14mm\u003c\/li\u003e\n  \u003cli\u003eInstall Torque: 25 Nm\u003c\/li\u003e\n  \u003cli\u003eThread reach: 26.5mm\u003c\/li\u003e\n  \u003cli\u003eSeat Type: Gasket\u003c\/li\u003e\n  \u003cli\u003eMade in the EU\u003c\/li\u003e\n  \u003cli\u003eHexagon: 16mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRefresh the ignition system with the APR Iridium Pro Spark Plug, designed for high-performance and tuned vehicle applications. Its optimized electrode design supports hard-to-ignite fuels such as ethanol, while the cooler operating temperature and improved resistance to preignition help support reliable performance under heat and load.\u003c\/p\u003e\u003cp\u003eThis heat range 9 spark plug features a non-projected insulator, gasket seat and 14 mm thread diameter with a 26.5 mm thread reach. It is designed as an excellent match for APR ignition coils and is suitable for upgraded APR vehicles. Always verify plug size, gap and heat range before installation; using the wrong-length plug can cause engine damage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Performance Benefits\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium Construction:\u003c\/strong\u003e Provides a melting point stated as 152% higher than silver, 125% higher than copper and 38% higher than platinum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Range 9:\u003c\/strong\u003e Intended for high-performance and tuned vehicle applications, with cooler operation than stock plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Electrode Design:\u003c\/strong\u003e Supports ignition of hard-to-ignite fuels, including ethanol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System Match:\u003c\/strong\u003e Designed as an excellent match for APR ignition coils, with lower required supplied voltage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eKey Product Specifications \u0026amp; Technical Data\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: APR\u003c\/li\u003e\n\u003cli\u003ePart Number: aprZ1003100\u003c\/li\u003e\n\u003cli\u003eHeat Range: 9\u003c\/li\u003e\n\u003cli\u003eThread Diameter: 14 mm\u003c\/li\u003e\n\u003cli\u003eThread Reach: 26.5 mm\u003c\/li\u003e\n\u003cli\u003eHexagon: 16 mm\u003c\/li\u003e\n\u003cli\u003eSeat Type: Gasket\u003c\/li\u003e\n\u003cli\u003eInstall Torque: 25 Nm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included in the Box\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOne APR Iridium Pro Spark Plug\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eListed for EA888.3, EA888.4, EA855.2 and EA824 applications. Confirm application-specific fitment, plug length, gap and heat range before installation.\u003c\/p\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":68067457138940,"sku":"Z1003100","price":59.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/0a1087829c1f5f30af9cd03bb7c48944L.jpg?v=1793733123","url":"https:\/\/diycustoms.store\/products\/apr-aprz1003100-ea888-3-4-ea855-2-and-ea824-iridium-pro-spark-plug-heat-range-9","provider":"diycustoms.store","version":"1.0","type":"link"}