{"product_id":"ngk-laser-iridium-spark-plugs-imr9d-9h-4-pack-iridium-tip-oem-grade-durability","title":"NGK Laser Iridium Spark Plugs IMR9D-9H 4-Pack — Iridium Tip, OEM-Grade Durability","description":"\u003cp\u003e\u003cstrong\u003eNGK IMR9D-9H Laser Iridium spark plugs are OEM-grade ignition components engineered to deliver reliable starting, consistent combustion, and long service life in compatible engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese NGK Laser Iridium plugs are frequently specified as original equipment and combine a fine iridium center electrode with precision construction to maintain stable sparks over many miles. They’re designed and manufactured by NGK — the world's largest supplier of OEM spark plugs — offering the quality, reliability, and durability expected from a factory part. Always verify vehicle fitment on NGK’s application guide before buying to confirm the correct engine, drivetrain, and quantity for your vehicle.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these plugs improve ignition reliability?\u003c\/h3\u003e\n\u003cp\u003eThe iridium-tipped center electrode maintains a sharp firing point that resists erosion, so the plug sustains consistent spark energy and timing as it ages. This leads to steadier combustion cycle-to-cycle compared with standard plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine iridium center electrode for stable spark and minimal wear\u003c\/li\u003e\n  \u003cli\u003ePrecision manufacturing reduces misfires and weak sparks\u003c\/li\u003e\n  \u003cli\u003eDurable construction resists fouling under normal operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and applications are these NGK IMR9D-9H plugs suited for?\u003c\/h3\u003e\n\u003cp\u003eThese plugs are often used as original equipment on compatible engines but fitment varies by make, model, year and engine type. Use NGK’s online application tool or your vehicle’s parts guide to confirm the IMR9D-9H is the correct plug for your engine and required quantity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommonly specified for OEM engine applications where IMR9D-9H is listed\u003c\/li\u003e\n  \u003cli\u003eSuitable for gasoline engines requiring iridium electrode plugs\u003c\/li\u003e\n  \u003cli\u003eSold as a 4-pack—verify the number needed for your vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect these iridium plugs to last compared to standard plugs?\u003c\/h3\u003e\n\u003cp\u003eIridium electrodes are much harder and more erosion-resistant than conventional nickel tips, so they typically provide longer intervals between changes. Real-world lifespan depends on driving style, engine condition, and maintenance, but iridium plugs commonly outlast standard plugs by a significant margin.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable iridium tip for extended service life\u003c\/li\u003e\n  \u003cli\u003eReduced electrode wear helps maintain performance over time\u003c\/li\u003e\n  \u003cli\u003eRecommended inspection at routine service intervals per vehicle guidance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I confirm fitment and install these spark plugs?\u003c\/h3\u003e\n\u003cp\u003eBefore purchase, consult NGK’s fitment database or your vehicle manual to confirm the IMR9D-9H part number matches your engine. Installation should follow factory torque specs and gap settings; if unsure, have a professional technician perform the change to prevent cross-threading or improper torque.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck NGK’s application guide for exact vehicle compatibility\u003c\/li\u003e\n  \u003cli\u003eUse correct torque and gap settings as specified by the vehicle maker\u003c\/li\u003e\n  \u003cli\u003eReplace in correct engine sequence and use anti-seize or dielectric as recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Drivers, mechanics, and fleet managers seeking OEM-equivalent spark plugs that prioritize durability and consistent ignition performance will find the NGK IMR9D-9H 4-pack appropriate. It’s a good choice for anyone replacing plugs on vehicles that specify this NGK part number or for technicians stocking commonly specified OEM-grade iridium plugs. Remember to confirm fitment for your specific vehicle and engine before ordering to ensure proper compatibility and quantity.\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: Is this NGK IMR9D-9H model sold as a set or single plug?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This listing is for a 4-pack of NGK IMR9D-9H spark plugs. Verify the number required for your vehicle before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can I check if IMR9D-9H fits my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use NGK’s online application tool or consult your vehicle’s parts guide to confirm compatibility with engine and drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":48084103004318,"sku":"B004A75R0C","price":87.61,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ngk-imr9d-9h-front-packaging.jpg?v=1785846482","url":"https:\/\/northtrailauto.ca\/products\/ngk-laser-iridium-spark-plugs-imr9d-9h-4-pack-iridium-tip-oem-grade-durability","provider":"North Trail Auto","version":"1.0","type":"link"}