{"product_id":"newparts-ngk-iridium-ix-spark-plug-set-16pc-for-chrysler-dodge-jeep-ram-5-7-6-4l-v8-iridium-tips-copper-core","title":"Newparts NGK Iridium IX Spark Plug Set 16pc for Chrysler Dodge Jeep Ram 5.7\/6.4L V8 — Iridium Tips \u0026 Copper Core","description":"\u003cp\u003e\u003cstrong\u003eHigh-performance NGK Iridium IX spark plugs in a 16-piece kit designed as a direct replacement for Chrysler, Dodge, Jeep and Ram 5.7L and 6.4L V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you need a full set of replacement spark plugs for V8 applications from 2011–2024, this Newparts-supplied kit contains 16 genuine NGK Iridium IX plugs with factory specifications. Each plug features an iridium-tipped center electrode for long life and consistent spark, a copper core for reliable heat transfer, and a 5\/8\" hex for straightforward installation. The set arrives in original NGK packaging and is intended to match OEM fitment and performance for listed models.\u003c\/p\u003e\n\n\u003ch3\u003eWill these spark plugs fit my Ram 1500 or other V8 vehicles?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are specified for many Chrysler\/Dodge\/Jeep\/Ram 5.7L and 6.4L V8 engines across model years 2011–2024. Always verify compatibility by cross-checking your engine size, year and OEM part number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Ram 1500 (2011–2024) with 5.7L V8 where NGK part matches.\u003c\/li\u003e\n  \u003cli\u003eCompatible with select Chrysler, Dodge, Jeep, and other Ram V8 models using the same plug spec.\u003c\/li\u003e\n  \u003cli\u003eConfirm fit with vehicle lookup or OEM part number.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these Iridium IX plugs improve performance and longevity?\u003c\/h3\u003e\n\u003cp\u003eIridium center electrodes deliver a finer, more durable spark contact than standard plugs, improving ignition stability while extending service intervals. The copper core assists heat control and contributes to consistent combustion characteristics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium tip for extended wear life and stable spark delivery.\u003c\/li\u003e\n  \u003cli\u003eCopper core for efficient heat dissipation and reliable operation.\u003c\/li\u003e\n  \u003cli\u003eTaper-cut ground electrode to optimize flame propagation and ignition consistency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications I should know before purchasing?\u003c\/h3\u003e\n\u003cp\u003eThis kit includes plugs built to NGK’s Iridium IX specification: 0.551\" thread diameter, 26.5 mm reach, 50.5 mm insulator height, and a pre-gap of 0.044\". Heat range and resistance details are included for correct application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread diameter: 0.551 inches; reach: 26.5 mm; insulator height: 50.5 mm.\u003c\/li\u003e\n  \u003cli\u003eCenter electrode: iridium tip over a copper core; ground electrode: taper cut.\u003c\/li\u003e\n  \u003cli\u003eHeat range: manufacturer-specified 5; built-in resistor ~5000 ohms; hex size: 5\/8\".\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect when installing and maintaining these plugs?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic engine service: torque plugs to manufacturer spec and check gap if necessary. Because iridium tips are long-lived, service intervals are typically longer than for conventional plugs, but regular inspection during tune-ups is still recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-gapped to 0.044\", verify and adjust per vehicle service manual if needed.\u003c\/li\u003e\n  \u003cli\u003eUse a torque wrench and NGK\/OEM torque specs to avoid over-tightening.\u003c\/li\u003e\n  \u003cli\u003eReplace in matched sets of 8 or 16 for multi-plug V8 engines to maintain engine balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this kit for? If you own a Chrysler, Dodge, Jeep or Ram equipped with a 5.7L or 6.4L V8 and want an OEM-grade, long-life ignition solution, this 16-pack is tailored for full-engine spark plug service. It’s suited to DIY mechanics, professional technicians, fleet operators, and anyone seeking NGK-certified replacement plugs in original packaging for reliable fit, consistent combustion, and reduced maintenance frequency. Always confirm vehicle compatibility with the provided specifications or a fitment lookup before purchase.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these NGK Iridium IX plugs pre-gapped for my V8?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they ship pre-gapped to 0.044\" but you should confirm and adjust to your vehicle’s specification before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace only half the plugs instead of all 16?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: For best combustion balance on V8 engines, replace the full set; partial replacement can cause uneven performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Newparts","offers":[{"title":"Default Title","offer_id":48082883608734,"sku":"B09MKDPXFM","price":244.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/newparts-ngk-iridium-ix-front-packaging.jpg?v=1785817849","url":"https:\/\/northtrailauto.ca\/products\/newparts-ngk-iridium-ix-spark-plug-set-16pc-for-chrysler-dodge-jeep-ram-5-7-6-4l-v8-iridium-tips-copper-core","provider":"North Trail Auto","version":"1.0","type":"link"}