{"product_id":"ngk-cmr6h-spark-plug-pack-of-4-3365-nickel-alloy-copper-core-for-oem-fitment","title":"NGK CMR6H Spark Plug Pack of 4 (3365) — Nickel Alloy, Copper Core for OEM Fitment","description":"\u003cp\u003e\u003cstrong\u003eNGK CMR6H (3365) is a four-pack of OEM-style nickel alloy spark plugs engineered to restore reliable ignition and consistent engine performance for vehicles specified to use CMR6H plugs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese NGK CMR6H 3365 spark plugs are standard nickel-core replacement plugs sold in a pack of four, designed to match original-equipment specifications for compatible engines. Built with NGK’s high-grade alumina silicate ceramic insulator, a 98% pure copper core, and trivalent metal plating, they focus on dependable conductivity, effective heat dissipation, and corrosion resistance. Before installing, confirm fitment against your vehicle manufacturer’s part list or owner’s manual to ensure correct application.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these NGK CMR6H plugs affect starting and idle?\u003c\/h3\u003e\n\u003cp\u003eReplacing worn or fouled spark plugs with correct-fit NGK CMR6H units can improve ignition reliability, making cold and hot starts more consistent and smoothing idle. They deliver stable spark transfer due to the copper core and robust insulator design.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores OEM ignition gap and spark intensity for proper combustion.\u003c\/li\u003e\n  \u003cli\u003eReduces misfires caused by worn electrodes or insulation breakdown.\u003c\/li\u003e\n  \u003cli\u003eImproves idle stability when plugs were previously degraded.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre NGK CMR6H (3365) plugs suitable for modern engines?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are engineered as standard replacement nickel alloy plugs and are ideal where the vehicle originally used nickel electrodes. They are not intended as a substitute where factory precious-metal (platinum\/iridium) plugs were specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBest for engines built for OE nickel alloy spark plugs.\u003c\/li\u003e\n  \u003cli\u003eNot recommended if your engine requires precious metal electrodes.\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle fitment charts or NGK references before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat construction features help durability and performance?\u003c\/h3\u003e\n\u003cp\u003eNGK engineered these plugs with features that promote longevity and consistent electrical performance under combustion conditions. The alumina silicate insulator and triple gasket sealing protect against heat and combustion leakage, while trivalent plating minimizes corrosion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-grade alumina silicate ceramic insulator for strong dielectric strength.\u003c\/li\u003e\n  \u003cli\u003e98% pure copper core for efficient heat transfer and conductivity.\u003c\/li\u003e\n  \u003cli\u003eTriple gasket seal and trivalent plating to resist gas leakage and corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I choose and install the CMR6H spark plugs?\u003c\/h3\u003e\n\u003cp\u003eSelect these NGK CMR6H plugs only after verifying the correct NGK part number for your engine. Proper torque, anti-seize practices per manufacturer guidance, and observing the factory gap (or re-gapping when specified) will help ensure reliable operation and avoid damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm part number (CMR6H \/ 3365) matches your vehicle’s requirements.\u003c\/li\u003e\n  \u003cli\u003eFollow vehicle torque specs and installation sequence to prevent cross-threading.\u003c\/li\u003e\n  \u003cli\u003eDo not substitute for precious-metal plugs unless specifically approved.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This four-pack of NGK CMR6H (3365) spark plugs is aimed at DIYers, professional technicians, and vehicle owners seeking OEM-style nickel replacement plugs for engines originally equipped with nickel alloy electrodes. If your vehicle manual lists CMR6H or an equivalent nickel plug, these NGK plugs deliver the dependable materials and fitment expected of a global OE supplier. If your engine requires platinum or iridium plugs, choose the factory-specified alternative instead.\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: Do NGK CMR6H (3365) plugs fit all vehicles?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Fitment varies—verify CMR6H\/3365 matches your vehicle’s specified part number before buying.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can CMR6H replace iridium or platinum plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. CMR6H are nickel alloy plugs and should not replace factory precious-metal plugs unless manufacturer allows it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":67592479473849,"sku":"B00BP31TJW","price":60.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ngk-cmr6h-front-packaging_b2e8c99b-3523-4279-b8ee-f49d27598d3e.jpg?v=1790564428","url":"https:\/\/redleafauto.ca\/products\/ngk-cmr6h-spark-plug-pack-of-4-3365-nickel-alloy-copper-core-for-oem-fitment","provider":"Redleaf Auto","version":"1.0","type":"link"}