{"product_id":"xr4ix-ngk-iridium-spark-plug-genuine-ngk-spark-plug","title":"XR4IX NGK Iridium Spark Plug | Genuine NGK Spark Plug","description":"\u003ch2\u003e🔧 Product Description\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eNGK Iridium Spark Plug – Part Number: XR4IX\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIridium NGK spark plugs offer a longer service life than a standard nickel-tipped spark plug: while nickel-alloy plugs offer a service life of roughly 20,000-40,000km, NGK Iridium IX spark plugs offer a service life of up to 60,000km, so fewer replacements are needed over time despite the higher initial cost.\u003c\/p\u003e\u003cp\u003ePrecious-metal spark plugs like the NGK Iridium IX also offer higher ignitability, achieved with an exposed fine-tip centre electrode that promotes superior flame growth compared with a standard spark plug. Iridium has a much higher melting point (2410°C) than nickel (1453°C), allowing the centre electrode diameter to be reduced from 2.5mm to 0.6mm – a smaller electrode mass that reduces the impedance to flame progress, helping acceleration, fuel consumption and idle quality.\u003c\/p\u003e\u003ch2\u003e⚙️ Key Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFine iridium-tipped centre electrode for a slow wear rate and stable idle\u003c\/li\u003e\n\u003cli\u003eLonger service life than standard nickel plugs\u003c\/li\u003e\n\u003cli\u003eTrivalent metal plating provides superior anti-corrosion and anti-seizing properties\u003c\/li\u003e\n\u003cli\u003eCorrugated ribs reduce the risk of flashover\u003c\/li\u003e\n\u003cli\u003ePure alumina silicate ceramic insulator, providing superior strength and better heat transfer\u003c\/li\u003e\n\u003cli\u003eCopper core aids in heat removal\u003c\/li\u003e\n\u003cli\u003eTriple seals prevent leakage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e📏 Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNGK stock number: 7189\u003c\/li\u003e\n\u003cli\u003eThread: 14 mm\u003c\/li\u003e\n\u003cli\u003eReach: 9.5 mm (3\/8 in)\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: Projected\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e🚘 Application\u003c\/h2\u003e\u003cp\u003eListed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment and automotive vehicles. The chart shows a 1.0 mm gap for these engines, but check it against your engine's manual before fitting.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBerkeley OLDSMOBILE (455 CID, 1976-1968) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar OLDSMOBILE 5.7L V8 (350 CID, 1982-1976) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar OLDSMOBILE 6.6L V8 (403 CID, 1982-1976) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar OLDSMOBILE 7.5L V8 (455 CID, 1976-1975) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eBuick Century (1958-1954) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Electra (1965-1959) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Gran Sport (1965) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Gran Sport (1967) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Invicta (1963-1959) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick LeSabre (1965-1959) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Limited (1958) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Riviera (1965-1963) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Skylark (1954) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Skylark (1967-1965) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Special (1958-1951) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Special (1963-1962) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Special (1967-1965) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Sportwagon (1967-1965) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Super (1958-1951) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eBuick Wildcat (1965-1963) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eCadillac Calais (1967) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eCadillac DeVille (1967) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eCadillac Eldorado (1967) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eCadillac Fleetwood (1967) – 6-8 per engine\u003c\/li\u003e\n\u003cli\u003eCadillac Series 60 Fleetwood (1952-1950) – 6-8 per engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThat is the 25 most common of 126 applications NGK's charts list for this plug – ask us to check yours.\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\n\u003cli\u003eBosch: 4236, W10FC, WR9FP\u003c\/li\u003e\n\u003cli\u003eAutolite: AP86\u003c\/li\u003e\n\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":56192580256036,"sku":"087295171899","price":58.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/XR4IX__0.jpg?v=1788370732","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/xr4ix-ngk-iridium-spark-plug-genuine-ngk-spark-plug","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}