{"product_id":"ngk-1-step-colder-spark-plug-set-fits-chrysler-dodge-ram-jeep-2011-2026-6-4l-392-6-2l-hellcat-set-of-16","title":"NGK 1-Step Colder Spark Plug Set: Fits Chrysler \/ Dodge \/ Ram \/ Jeep 2011-2026 6.4L 392 \u0026 6.2L Hellcat (Set of 16)","description":"\u003ch1\u003eNGK 1-Step Colder Spark Plug Set\u003c\/h1\u003e\n\u003ch2\u003e2011–2026 Chrysler \/ Dodge \/ Ram \/ Jeep 6.4L 392 \u0026amp; 6.2L Hellcat\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e 2309\u003c\/p\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe NGK 1-Step Colder Spark Plug Set is engineered specifically for high-performance Chrysler, Dodge, Ram, and Jeep vehicles equipped with the 6.4L 392 and 6.2L Hellcat engines from 2011 through 2026. Designed to meet the demands of supercharged or nitrous-assisted powertrains, these spark plugs provide enhanced reliability and consistent ignition under extreme combustion conditions. By offering a colder heat range and a fine-wire iridium electrode, they help control engine temperatures, reduce detonation risks, and maintain efficient combustion for improved throttle response and overall performance.\u003c\/p\u003e\n\u003cp\u003eIdeal for enthusiasts and professionals alike, this set of four spark plugs ensures durability and precision in high-horsepower street and competition applications where engine stress is elevated.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cp\u003eNGK’s 1-Step Colder Spark Plugs incorporate advanced technology to optimize ignition performance and engine longevity in boosted or nitrous-enhanced setups. Key features include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1-Step Colder Heat Range:\u003c\/strong\u003e Designed to manage increased combustion temperatures in high-output engines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFine-Wire 0.6mm Iridium Electrode:\u003c\/strong\u003e Provides a precise and consistent spark for improved ignition efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCopper Core:\u003c\/strong\u003e Enhances heat dissipation to prevent overheating under extreme load conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjected-Tip Design:\u003c\/strong\u003e Promotes better fuel burn and quicker throttle response.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePure Alumina Ceramic Insulator:\u003c\/strong\u003e Offers superior strength and thermal stability in high-temperature environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTriple-Seal Construction:\u003c\/strong\u003e Prevents combustion gas leakage for reliable performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Corrosion Trivalent Plating:\u003c\/strong\u003e Protects threads from galling and seizing during installation and removal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTaper-Cut Ground Electrode:\u003c\/strong\u003e Enhances flame propagation for efficient combustion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResistor Plug (5k Ohm):\u003c\/strong\u003e Minimizes electrical interference with vehicle electronics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Gapped to 0.031\" (0.8mm):\u003c\/strong\u003e Ensures optimal spark gap for consistent ignition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction \u0026amp; Design\u003c\/h3\u003e\n\u003cp\u003eEach NGK spark plug is meticulously constructed with a copper core to facilitate rapid heat transfer, critical for maintaining optimal operating temperatures in boosted engines. The fine-wire iridium center electrode, measuring just 0.6mm, delivers a strong and stable spark while resisting wear over time. The pure alumina ceramic insulator provides exceptional mechanical strength and thermal endurance, ensuring the plug withstands the rigors of high-performance combustion cycles.\u003c\/p\u003e\n\u003cp\u003eAdditionally, the triple-seal design prevents combustion gases from escaping, preserving engine efficiency and preventing misfires. The corrosion-resistant trivalent plating on the threads safeguards against seizing, making installation and future maintenance hassle-free.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eInstallation of the NGK 1-Step Colder Spark Plug Set is straightforward and designed to fit directly into factory spark plug locations without modification. Torque specifications are 18–25.3 lb-ft for cast iron cylinder heads and 18–21.6 lb-ft for aluminum heads, ensuring proper sealing and performance. These plugs are pre-gapped to 0.031\" (0.8mm), but it is recommended to verify the gap before installation to match specific engine requirements.\u003c\/p\u003e\n\u003cp\u003eThis set fits a wide range of vehicles equipped with the 6.4L 392 and 6.2L Hellcat engines, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2011–2023 Dodge Challenger 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2012–2014 Chrysler 300 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2023–2024 Chrysler 300 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2012–2023 Dodge Charger 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2012–2014 Jeep Grand Cherokee 6.4L SRT8\u003c\/li\u003e\n  \u003cli\u003e2014–2025 Ram 2500 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2014–2025 Ram 3500 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2015–2023 Dodge Challenger 6.2L Hellcat\u003c\/li\u003e\n  \u003cli\u003e2015–2023 Dodge Charger 6.2L Hellcat\u003c\/li\u003e\n  \u003cli\u003e2018–2026 Dodge Durango 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2018–2021 Jeep Grand Cherokee 6.2L Trackhawk\u003c\/li\u003e\n  \u003cli\u003e2021–2026 Dodge Durango 6.2L Hellcat\u003c\/li\u003e\n  \u003cli\u003e2021–2026 Jeep Wrangler 6.4L 392\u003c\/li\u003e\n  \u003cli\u003e2022–2024 Jeep Grand Wagoneer 6.4L 392\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSet of 16 NGK 1-Step Colder Iridium Spark Plugs (Part #2309)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cp\u003eThis spark plug set is perfect for performance enthusiasts and professional tuners who operate Chrysler, Dodge, Ram, or Jeep vehicles with high-output 6.4L 392 and 6.2L Hellcat engines. It is especially suited for applications involving supercharging or nitrous oxide where controlling combustion temperatures and preventing detonation are critical. Whether for street performance, track days, or competitive motorsports, these plugs deliver consistent ignition reliability and durability under demanding conditions.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":48219487338708,"sku":null,"price":150.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/ngkset16.png?v=1783393450","url":"https:\/\/fasthemis.com\/products\/ngk-1-step-colder-spark-plug-set-fits-chrysler-dodge-ram-jeep-2011-2026-6-4l-392-6-2l-hellcat-set-of-16","provider":"FastHemis","version":"1.0","type":"link"}