{"product_id":"denso-iw20-iridium-spark-plug-part-number-5306","title":"DENSO IW20 Iridium Spark Plug, Part Number 5306","description":"Iridium Spark Plug - IW20\n\u003cp\u003eThe DENSO IW20 Iridium Spark Plug, manufacturer part number 5306 and vendor part number 5306, is engineered to provide dependable ignition performance for compatible automotive and powersports applications. Its iridium electrodes withstand temperatures up to 4,000°F, helping the plug maintain durability and consistent operation under demanding engine conditions. The fine iridium electrode design also helps reduce voltage requirements while supporting reliable spark formation.\u003c\/p\u003e\u003cp\u003eDENSO uses 360-degree laser welding to secure the electrode and create a wear-resistant seal designed for demanding environments. The tapered-cut ground electrode and U-groove configuration create a larger volume area around the flame center, supporting efficient combustion and stable ignition. This design can contribute to smooth engine operation and dependable starting when the plug is correctly matched to the application.\u003c\/p\u003e\u003cp\u003eFitment varies by vehicle, engine, and application. Verify the DENSO IW20 model and part number 5306 against the original equipment specification or an authoritative application guide before installation. This spark plug is intended as a direct replacement for compatible applications and should be installed using the vehicle manufacturer’s recommended procedures and gap specifications. The product is sold as an individual spark plug.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: DENSO\u003c\/li\u003e\n\u003cli\u003eModel: IW20\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 5306\u003c\/li\u003e\n\u003cli\u003eVendor part number: 5306\u003c\/li\u003e\n\u003cli\u003eElectrode material: Iridium\u003c\/li\u003e\n\u003cli\u003eTemperature resistance: Supports operating temperatures up to 4,000°F\u003c\/li\u003e\n\u003cli\u003eElectrode design: Fine iridium electrode helps reduce voltage requirements and improve firing performance\u003c\/li\u003e\n\u003cli\u003eWelding construction: 360-degree laser-welded electrode seal resists wear in demanding conditions\u003c\/li\u003e\n\u003cli\u003eGround electrode: Tapered-cut design with a U-groove creates a larger flame-center volume area\u003c\/li\u003e\n\u003cli\u003eFitment: Compatible with select automotive and powersports applications; verify application-specific fitment before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":67567391604971,"sku":"IW20","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/34543.png?v=1790796294","url":"https:\/\/ctracingservices.com\/products\/denso-iw20-iridium-spark-plug-part-number-5306","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}