{"product_id":"ngk-7397-tr5ix-iridium-ix-spark-plug-for-mercury-omc-indmar-and-marine-power-i-o-engines","title":"NGK 7397 TR5IX Iridium IX Spark Plug for Mercury, OMC, Indmar and Marine Power I\/O Engines","description":"\u003cp\u003eThe NGK 7397 is an NGK Iridium IX spark plug (TR5IX) built for extreme ignitability and exceptional anti-fouling performance. A tapered cut ground electrode improves cold starting, idle stability, and throttle response, while the iridium fine wire center electrode is six times harder wearing than platinum for long, consistent service life. The copper core center electrode delivers superior heat dissipation and conductivity across a broad heat range, translating into outstanding acceleration, higher fuel efficiency, and durability compared to a standard nickel plug.\u003c\/p\u003e\u003cp\u003eThis spark plug is designed to fit inboard\/outboard (I\/O) marine engines from Indmar, Marine Power, Mercury, and OMC, as well as a range of automotive gasoline engines from Dodge\/Eagle, Ford\/Lincoln\/Mercury, GM, Jaguar, Mazda, Mercedes-Benz, and Volvo. Always check your engine owner's manual and confirm the plug specified by your engine's original equipment manufacturer before installation, since using an incorrect plug can reduce performance, hurt fuel economy, or damage the engine.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e NGK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 7397\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e TR5IX Iridium IX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 5000 ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Electrode Configuration:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround Electrode Core Material:\u003c\/strong\u003e Nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Electrode Core Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Electrode Tip Material:\u003c\/strong\u003e Iridium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 087295173978\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIndmar I\/O engines, 2005-94\u003c\/li\u003e\n\u003cli\u003eMarine Power I\/O engines, 2000-98\u003c\/li\u003e\n\u003cli\u003eMercury I\/O engines, 2006-00\u003c\/li\u003e\n\u003cli\u003eOMC I\/O engines, 1998-87\u003c\/li\u003e\n\u003cli\u003eDodge\/Eagle, 1992-88\u003c\/li\u003e\n\u003cli\u003eFord\/Lincoln\/Mercury, 2012-74\u003c\/li\u003e\n\u003cli\u003eGM, 2014-75\u003c\/li\u003e\n\u003cli\u003eJaguar, 1988-77\u003c\/li\u003e\n\u003cli\u003eMazda, 2009-94\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz, 1993-84\u003c\/li\u003e\n\u003cli\u003eVolvo, 1990-76\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are listed for this part.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the NGK 7397 spark plug fit?\u003c\/strong\u003e The NGK 7397 (TR5IX) is designed to fit I\/O marine engines from Indmar (2005-94), Marine Power (2000-98), Mercury (2006-00), and OMC (1998-87), as well as automotive engines from Dodge\/Eagle, Ford\/Lincoln\/Mercury, GM, Jaguar, Mazda, Mercedes-Benz, and Volvo across the listed year ranges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the NGK 7397 an iridium spark plug?\u003c\/strong\u003e Yes, the 7397 is an NGK Iridium IX plug (TR5IX) with an iridium fine wire center electrode that is six times harder wearing than platinum, paired with a copper core for improved heat dissipation and conductivity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the electrical resistance of this spark plug?\u003c\/strong\u003e The NGK 7397 has a resistance of 5000 ohms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials make up the electrodes on the 7397 plug?\u003c\/strong\u003e The center electrode has a copper core with an iridium tip, and the ground electrode has a nickel core, in a standard ground configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the tapered ground electrode make a real difference?\u003c\/strong\u003e On the NGK 7397, the tapered cut ground electrode is designed to improve cold starting, idle stability, and throttle response compared to a conventional ground electrode design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the NGK 7397 spark plug weigh?\u003c\/strong\u003e This spark plug weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the NGK 7397 spark plug?\u003c\/strong\u003e The UPC for the NGK 7397 (TR5IX) spark plug is 087295173978.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spark plugs come in this listing?\u003c\/strong\u003e The NGK 7397 is sold as a single spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre there OEM cross-reference numbers for the NGK 7397?\u003c\/strong\u003e No OEM cross-reference or Replaces numbers are listed for the NGK 7397 (TR5IX) spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 7397 Iridium IX plug compare to a standard nickel plug?\u003c\/strong\u003e The NGK 7397's iridium center electrode tip and copper core provide better heat dissipation, conductivity, and durability than a standard nickel plug, along with improved acceleration and fuel efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould I confirm fitment before ordering the 7397 plug?\u003c\/strong\u003e Yes, check your engine and maintenance manual for the correct spark plug and use only the plug recommended by your engine's original equipment manufacturer, since an incorrect plug can reduce performance, hurt fuel economy, or damage the engine.\u003c\/p\u003e","brand":"NGK Spark Plugs","offers":[{"title":"Default Title","offer_id":49028254957787,"sku":"NGK-TR5IX","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/NGK-TR5IX__30563.1558187677.500.750.jpg?v=1785165243","url":"https:\/\/www.goodvibesmarina.com\/products\/ngk-7397-tr5ix-iridium-ix-spark-plug-for-mercury-omc-indmar-and-marine-power-i-o-engines","provider":"Good Vibes Marina","version":"1.0","type":"link"}