{"product_id":"ngk-spark-plugs-iridium-ix-cr9eix-spark-plug-part-number-3521","title":"NGK Spark Plugs Iridium IX CR9EIX Spark Plug, Part Number 3521","description":"Iridium IX Spark Plug - CR9EIX\n\u003cp\u003eThe NGK Spark Plugs Iridium IX CR9EIX spark plug is engineered for dependable ignition, efficient combustion, and long-lasting performance. Designed with a fine iridium center electrode, this spark plug requires less voltage to produce a strong spark than conventional designs. The reduced voltage demand can help support consistent ignition performance while reducing strain on ignition system components.\u003c\/p\u003e\u003cp\u003eThe iridium electrode is approximately 25% smaller than a platinum electrode and about one-quarter the size of a conventional nickel electrode. This ultra-fine design promotes focused spark formation and reliable combustion across a wide range of operating conditions. The updated metal shell plating also provides enhanced resistance to corrosion, helping the plug maintain its durability in demanding engine environments.\u003c\/p\u003e\u003cp\u003eUse the NGK Spark Plugs Iridium IX CR9EIX, manufacturer part number 3521, as a direct replacement when your application specifies this heat range, thread pattern, and plug design. Fitment should be verified against the vehicle, engine, equipment, and original spark plug specifications before installation. This product is supplied by NGK Spark Plugs and is intended for applications requiring the CR9EIX model.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine iridium center electrode helps deliver reliable ignition and efficient combustion\u003c\/li\u003e\n\u003cli\u003eUltra-small electrode design reduces voltage requirements and may extend ignition system life\u003c\/li\u003e\n\u003cli\u003eIridium electrode is approximately 25% smaller than a platinum electrode\u003c\/li\u003e\n\u003cli\u003eElectrode is about one-quarter the size of a conventional nickel electrode\u003c\/li\u003e\n\u003cli\u003eEnhanced metal shell plating improves resistance to corrosion\u003c\/li\u003e\n\u003cli\u003eBrand: NGK Spark Plugs\u003c\/li\u003e\n\u003cli\u003eModel: Iridium IX CR9EIX\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 3521\u003c\/li\u003e\n\u003cli\u003eVendor part number: 3521\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK SPARK PLUGS","offers":[{"title":"Default Title","offer_id":67568385360107,"sku":"CR9EIX","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/29244.png?v=1790802113","url":"https:\/\/ctracingservices.com\/products\/ngk-spark-plugs-iridium-ix-cr9eix-spark-plug-part-number-3521","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}