{"product_id":"tr55ix-ngk-iridium-spark-plug-genuine-ngk-spark-plug","title":"TR55IX 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: TR55IX\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: 7164\u003c\/li\u003e\n\u003cli\u003eThread: 14 mm\u003c\/li\u003e\n\u003cli\u003eReach: .708\"\u003c\/li\u003e\n\u003cli\u003eHex: 16 mm (5\/8 in)\u003c\/li\u003e\n\u003cli\u003eSeat: Tapered\u003c\/li\u003e\n\u003cli\u003eTerminal: Solid\u003c\/li\u003e\n\u003cli\u003eType: Projected, Wide Gap\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 1.5 mm gap for these engines, but check it against your engine's manual before fitting.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCrusader GM V8-5.0L MP (275 HP, 2005) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eCrusader GM V8-5.7L CARB (300 HP) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eCrusader GM V8-5.7L MP (220 HP, 2005) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eCrusader GM V8-6.0L MP (375 HP) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eCrusader GM V8-8.1L MP (385 HP) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eCrusader GM V8-8.1L MP (HO) (425 HP) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar 4.6L MPI NORTHSTAR (279 CID) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar 5.7L V8 LS1 (8 CYL GM SMALL BLOCK, 2002-1994) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar 5.7L V8 LS1 (8 CYL GM SMALL BLOCK, 2005-2003) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar 6.0L V8 (8 CYL GM BIG BLOCK, 2005-2003) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eIndmar 8.1L MPI VORTEC (8 CYL GM BIG BLOCK, 2005-2003) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 4.3L MPI GEN+ (6 CYL GM V-6, FROM 0M322781) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 4.5L BRIZO (6 CYL V-6) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 5.0L MPI GEN+ (8 CYL GM SMALL BLOCK, FROM 0M320415) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 8.1S HO (8 CYL GM BIG BLOCK, 2006-2000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 8.1S HORIZON (8 CYL GM BIG BLOCK, 2006-2000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 350 MAG MPI GEN+ (8 CYL GM SMALL BLOCK, FROM 0M310000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 350 MAG MPI GEN+ (8 CYL GM SMALL BLOCK, FROM 0M320590) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 350 MAG MPI GEN+ HORIZON (8 CYL GM SMALL BLOCK, FROM 0M310000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 496 MAG (8 CYL GM BIG BLOCK) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser 496 MAG HO (8 CYL GM BIG BLOCK) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser BLACK SCORPION 5.7L (8 CYL GM SMALL BLOCK, FROM 0M391852, 2006-2000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser BLACK SCORPION MX 6.2 (8 CYL GM SMALL BLOCK, FROM 0M391778, 2006-2000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser MX 6.2 MPI (8 CYL GM SMALL BLOCK, FROM 0M320614, 2006-2000) – Inboard Engine\u003c\/li\u003e\n\u003cli\u003eMercruiser MX 6.2 MPI HORIZON (8 CYL GM SMALL BLOCK, FROM 0M320614) – Inboard Engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThat is the 25 most common of 245 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\u003eACDelco: 12, 12561466, 12563707, 12565753, 14, 15, 16, 1835342T and 30 more\u003c\/li\u003e\n\u003cli\u003eAutolite: XP103, XP104, XP105, XP5243, XP5243DP2, XP5245, XP5245DP2, XP605 and 3 more\u003c\/li\u003e\n\u003cli\u003eBosch: 4041, 4458, 4459, 6241, 9601, 9653, 9655, HR8KII33V and 2 more\u003c\/li\u003e\n\u003cli\u003eBeck Arnley: 1765288\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":56192466911524,"sku":"087295171646","price":38.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/TR55IX__1.jpg?v=1788370590","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/tr55ix-ngk-iridium-spark-plug-genuine-ngk-spark-plug","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}