{"product_id":"r7420-105-ngk-racing-spark-plug-genuine-ngk-spark-plug","title":"R7420-105 NGK Racing Spark Plug | Genuine NGK Spark Plug","description":"\u003ch2\u003e🔧 Product Description\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eNGK Racing Spark Plug – Part Number: R7420-105\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNGK racing spark plugs are built for sustained high-RPM, high-temperature competition use, with precious-metal electrodes and cold heat ranges chosen for heavily loaded engines. Racing plugs are application-specific – heat range selection is critical, so confirm the specification for your engine before fitting.\u003c\/p\u003e\u003ch2\u003e⚙️ Key Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompetition-grade construction for sustained high RPM and cylinder temperatures\u003c\/li\u003e\n\u003cli\u003eCold heat range for heavily loaded engines\u003c\/li\u003e\n\u003cli\u003ePure alumina silicate ceramic insulator, providing superior strength and better heat transfer\u003c\/li\u003e\n\u003cli\u003eTriple seals prevent leakage\u003c\/li\u003e\n\u003cli\u003eNGK Racing Series plugs are engineered to withstand the harshest engine conditions\u003c\/li\u003e\n\u003cli\u003eStandard nickel centre electrode\u003c\/li\u003e\n\u003cli\u003eCorrugated ribs reduce the risk of flashover\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e📏 Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNGK stock number: 4857\u003c\/li\u003e\n\u003cli\u003eThread: Racing Spark Plugs\u003c\/li\u003e\n\u003cli\u003eReach: 21 mm\u003c\/li\u003e\n\u003cli\u003eHex: 20.8 mm (13\/16 in)\u003c\/li\u003e\n\u003cli\u003eSeat: Gasket\u003c\/li\u003e\n\u003cli\u003eTerminal: Solid\u003c\/li\u003e\n\u003cli\u003eType: Iridium Low Angle Ground Electrode Resistor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e🚘 Application\u003c\/h2\u003e\u003cp\u003eNGK lists the principal application for this plug as: Racing Use.\u003c\/p\u003e\u003cp\u003eAsk us to confirm the exact fit for your equipment.\u003c\/p\u003e\u003ch2\u003e🔄 Supersession \u0026amp; Cross Reference\u003c\/h2\u003e\u003cp\u003eNGK's cross-reference tables list this plug against these part numbers.\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDENSO: 5721, IRE01-32\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003e📦 Condition\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand new genuine product\u003c\/li\u003e\n\u003cli\u003eSupplied in original packaging\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":56192333152548,"sku":"087295148570","price":132.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/R7420-105__0.jpg?v=1788370422","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/r7420-105-ngk-racing-spark-plug-genuine-ngk-spark-plug","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}