{"product_id":"ngk-spark-plugs-imr8c-9h-iridium-spark-plug-part-number-3653","title":"NGK SPARK PLUGS IMR8C-9H Iridium Spark Plug, Part Number 3653","description":"Spark Plug - IMR8C-9H\n\u003cp\u003eThe NGK SPARK PLUGS IMR8C-9H Iridium Spark Plug is designed to provide dependable ignition performance, efficient combustion, and long service life. Manufactured by NGK SPARK PLUGS, this spark plug uses a fine iridium tip to deliver a consistently stable spark under demanding operating conditions. The ultra-small-diameter center electrode helps reduce the voltage required for ignition, which can support easier starting and help extend the life of related ignition system components.\u003c\/p\u003e\u003cp\u003eTrivalent metal plating provides superior resistance to corrosion and seizing, while the plated metal shell offers enhanced protection against rust and environmental exposure. These features help maintain reliable installation and removal during routine service. The IMR8C-9H model is engineered for applications requiring precise ignition performance and should be matched to the vehicle, engine, and manufacturer-specific fitment requirements before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Intended for compatible automotive, powersports, or equipment applications that specify the NGK SPARK PLUGS IMR8C-9H spark plug. Verify the application using the original equipment specifications or a qualified fitment guide. This product is identified by manufacturer part number 3653 and vendor part number 3653.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine iridium tip: Promotes high durability and a consistently stable spark.\u003c\/li\u003e\n\u003cli\u003eTrivalent metal plating: Provides superior resistance to corrosion and seizing.\u003c\/li\u003e\n\u003cli\u003eImproved engine performance: Supports responsive acceleration, fuel efficiency, and dependable service life.\u003c\/li\u003e\n\u003cli\u003eUltra-small-diameter center electrode: Reduces ignition voltage requirements and helps extend ignition system life.\u003c\/li\u003e\n\u003cli\u003eEnhanced shell protection: Plated metal shell helps resist corrosion during service and storage.\u003c\/li\u003e\n\u003cli\u003eModel: IMR8C-9H.\u003c\/li\u003e\n\u003cli\u003eBrand: NGK SPARK PLUGS.\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 3653.\u003c\/li\u003e\n\u003cli\u003eVendor part number: 3653.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK SPARK PLUGS","offers":[{"title":"Default Title","offer_id":67567668789483,"sku":"21030013","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/23958.png?v=1790797544","url":"https:\/\/ctracingservices.com\/products\/ngk-spark-plugs-imr8c-9h-iridium-spark-plug-part-number-3653","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}