{"product_id":"ngk-spark-plugs-imr9d-9h-spark-plug-part-number-6544","title":"NGK Spark Plugs IMR9D-9H Spark Plug, Part Number 6544","description":"Spark Plug - IMR9D-9H\n\u003cp\u003eThe NGK Spark Plugs IMR9D-9H spark plug is engineered for dependable ignition performance in compatible engines. Featuring a fine iridium tip, this spark plug delivers high durability and a consistently stable spark over an extended service life. Its ultra-small-diameter center electrode helps reduce the voltage required for ignition, supporting efficient operation while helping extend the life of related ignition system components.\u003c\/p\u003e\u003cp\u003eTrivalent metal plating provides superior resistance to corrosion and seizing, while the enhanced-corrosion-resistant metal shell helps protect the plug in demanding operating environments. The result is reliable installation, improved durability, and consistent performance under a wide range of conditions. This plug is designed for fitment in applications specified for the NGK IMR9D-9H model and should be matched to the vehicle or equipment manufacturer's ignition specifications before installation.\u003c\/p\u003e\u003cp\u003eNGK Spark Plugs part number 6544 is suitable for compatible automotive, powersports, and equipment applications requiring the IMR9D-9H configuration. Proper fitment depends on the engine model, year, and application, so verify the manufacturer's service information or the original spark plug specification before ordering. Supplied by NGK Spark Plugs, this iridium spark plug is a practical choice for maintaining stable ignition, strong acceleration, fuel efficiency, and long-term engine performance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine iridium tip: Provides high durability and a consistently stable spark.\u003c\/li\u003e\n\u003cli\u003eTrivalent metal plating: Helps resist corrosion and seizing during service and removal.\u003c\/li\u003e\n\u003cli\u003eUltra-small-diameter center electrode: Reduces ignition voltage requirements and supports longer ignition system life.\u003c\/li\u003e\n\u003cli\u003eEnhanced metal shell protection: Improves resistance to corrosion in demanding environments.\u003c\/li\u003e\n\u003cli\u003ePerformance support: Promotes dependable acceleration, fuel efficiency, and durability in compatible applications.\u003c\/li\u003e\n\u003cli\u003eFitment: Designed for engines and equipment specified for the NGK IMR9D-9H model.\u003c\/li\u003e\n\u003cli\u003eBrand and part number: NGK Spark Plugs, manufacturer part number 6544.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK SPARK PLUGS","offers":[{"title":"Default Title","offer_id":67568051060971,"sku":"21030011","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/23938.png?v=1790800335","url":"https:\/\/ctracingservices.com\/products\/ngk-spark-plugs-imr9d-9h-spark-plug-part-number-6544","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}