{"product_id":"ngk-iridium-spark-plugs-cr8eix-pack-of-4-long-life-iridium-electrode-stable-ignition","title":"NGK Iridium Spark Plugs CR8EIX Pack of 4 — Long-Life Iridium Electrode, Stable Ignition","description":"\u003cp\u003e\u003cstrong\u003eThe NGK Iridium CR8EIX spark plug pack of four is a high-performance iridium electrode plug designed to deliver reliable ignition, improved throttle response, and extended service life for compatible petrol engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis genuine NGK Iridium IX set (part number 4218) contains four original replacement spark plugs engineered for consistent combustion and minimal wear. Iridium’s fine center electrode lowers required voltage and resists erosion, helping maintain a steady spark over many miles. These plugs are commonly chosen for vehicles where ignition stability, efficient fuel burn, and long intervals between replacements matter.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the CR8EIX improve ignition stability?\u003c\/h3\u003e\n\u003cp\u003eThe CR8EIX uses a very fine iridium center electrode that creates a concentrated spark with lower voltage demand, promoting a more complete combustion event. That concentrated spark reduces misfires and helps the engine start more consistently in varied conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIridium center electrode for precise spark delivery\u003c\/li\u003e\n  \u003cli\u003eFactory-specified gap for reliable firing\u003c\/li\u003e\n  \u003cli\u003eReduced electrode wear for longer service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these plugs fit my vehicle and how do I confirm compatibility?\u003c\/h3\u003e\n\u003cp\u003eNGK provides a parts catalog and online lookup to confirm fit by make, model, year, and engine code. Always cross-check the CR8EIX (NGK 4218) against your owner’s manual or NGK’s compatibility list before purchase to ensure correct thread size, reach, and heat range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePart number: NGK 4218 – CR8EIX\u003c\/li\u003e\n  \u003cli\u003eVerify thread size, hex size, and reach with vehicle specs\u003c\/li\u003e\n  \u003cli\u003eUse NGK or dealer lookup for final confirmation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance benefits can I expect from iridium plugs?\u003c\/h3\u003e\n\u003cp\u003eIridium’s hardness and high melting point make the electrode resistant to erosion, so the plug maintains its gap and performance longer than plain nickel plugs. That longevity means fewer replacements and more consistent fuel combustion over extended mileage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLonger service intervals compared with conventional plugs\u003c\/li\u003e\n  \u003cli\u003eStable electrode gap preserves ignition timing and efficiency\u003c\/li\u003e\n  \u003cli\u003eReduced deposit build-up for steady performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I install and care for the NGK CR8EIX plugs?\u003c\/h3\u003e\n\u003cp\u003eInstall using the correct torque specification for your engine to avoid damage to the plug or cylinder head. Inspect ignition coils and boots during replacement, and re-check torque after initial heat cycles for best reliability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHand-start then torque to vehicle manufacturer specs\u003c\/li\u003e\n  \u003cli\u003eReplace related ignition components if worn (boots, coils)\u003c\/li\u003e\n  \u003cli\u003eCheck for proper gap only if specified by the service manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This NGK Iridium CR8EIX pack of four is suited to car owners, DIY mechanics, and professional technicians seeking original-equipment replacement plugs that balance dependable performance with long life. It’s ideal for drivers who want consistent starting, steady throttle response, and fewer spark plug changes, provided the CR8EIX matches the vehicle’s specified plug requirements.\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: How many spark plugs are included in this pack?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package contains four genuine NGK Iridium CR8EIX spark plugs (NGK part 4218).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I gap these plugs myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: These are pre-gapped to NGK specifications; only adjust gap if your vehicle service manual instructs you to.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":48083141001374,"sku":"B00LNPIS8C","price":54.38,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ngk-iridium-cr8eix-pack-front.jpg?v=1785826300","url":"https:\/\/northtrailauto.ca\/products\/ngk-iridium-spark-plugs-cr8eix-pack-of-4-long-life-iridium-electrode-stable-ignition","provider":"North Trail Auto","version":"1.0","type":"link"}