{"product_id":"ngk-lfr5a-11-spark-plug-stock-6376-standard-copper-core-for-mercury-mariner-yamaha-suzuki-outboards","title":"NGK LFR5A-11 Spark Plug (Stock 6376) - Standard Copper Core for Mercury, Mariner, Yamaha, Suzuki Outboards","description":"\u003cp\u003eThe NGK LFR5A-11 is a standard spark plug identified by NGK stock number 6376, built around a solid copper core for strong heat dissipation, reliable conductivity, and a broad operating heat range. The shell carries a corrosion-resistant plating that keeps installation and removal easy even after the plug has seen heat cycling and marine or automotive service conditions. NGK Standard plugs like the LFR5A-11 are an OE cornerstone design, meaning they are built to the same baseline NGK has supplied to original equipment manufacturers for decades rather than a premium iridium or platinum upgrade.\u003c\/p\u003e\u003cp\u003eThe LFR5A-11 uses a standard ground configuration with a nickel ground electrode, a copper core center electrode, and a nickel center electrode tip. Electrical resistance is rated at 5000 ohms, which helps suppress ignition noise. This plug is listed to fit Infiniti model years 2010-01, Nissan model years 2008-00, and Suzuki model years 2011-09, and it also covers outboard motor applications, including Mariner model year 2000, Mercury model years 2006-00, and Yamaha model years 2005-99. Always confirm the correct spark plug against your engine's own maintenance manual before ordering, since installing the wrong plug can reduce fuel economy, cut performance, 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 LFR5A-11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock Number:\u003c\/strong\u003e 6376\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistance:\u003c\/strong\u003e 5000 ohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGround 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 Nickel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 14 millimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 087295163764\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInfiniti, model years 2010-01\u003c\/li\u003e\n\u003cli\u003eNissan, model years 2008-00\u003c\/li\u003e\n\u003cli\u003eSuzuki, model years 2011-09\u003c\/li\u003e\n\u003cli\u003eMariner outboard, model year 2000\u003c\/li\u003e\n\u003cli\u003eMercury outboard, model years 2006-00\u003c\/li\u003e\n\u003cli\u003eYamaha outboard, model years 2005-99\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the NGK LFR5A-11 spark plug used for?\u003c\/strong\u003e The NGK LFR5A-11, NGK stock number 6376, is a standard spark plug with a solid copper core designed for reliable ignition performance across a broad heat range in applications such as Mercury, Mariner, Yamaha, and Suzuki outboard engines as well as certain Infiniti and Nissan applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat electrode materials does the LFR5A-11 use?\u003c\/strong\u003e This plug has a nickel ground electrode, a copper core center electrode, and a nickel center electrode tip, which is the standard NGK electrode configuration for this stock number 6376 plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the electrical resistance of NGK stock number 6376?\u003c\/strong\u003e The NGK LFR5A-11 (stock number 6376) is rated at 5000 ohms of resistance, which helps suppress ignition noise during operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the thread size of the NGK LFR5A-11?\u003c\/strong\u003e The thread size on this spark plug is 14 millimeters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the NGK LFR5A-11 fit Mercury outboard engines?\u003c\/strong\u003e Yes, the LFR5A-11 (stock number 6376) is listed to fit Mercury outboard engines for model years 2006-00.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this spark plug compatible with Yamaha outboards?\u003c\/strong\u003e Yes, NGK lists the LFR5A-11 as fitting Yamaha outboard applications for model years 2005-99.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the LFR5A-11 fit Mariner outboards?\u003c\/strong\u003e It is listed for Mariner outboard model year 2000, in addition to its Mercury and Yamaha outboard coverage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ground electrode configuration does this plug have?\u003c\/strong\u003e The NGK LFR5A-11 uses a standard ground configuration, as opposed to a surface-discharge or semi-surface-discharge design found on some other NGK stock numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the NGK LFR5A-11 a copper or iridium spark plug?\u003c\/strong\u003e It is a standard copper-core plug with a nickel-tipped center electrode, not an iridium or platinum design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the weight of NGK stock number 6376?\u003c\/strong\u003e The NGK LFR5A-11 spark plug weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this spark plug fit Suzuki, Nissan, or Infiniti models?\u003c\/strong\u003e Yes, the LFR5A-11 is listed for Suzuki model years 2011-09, Nissan model years 2008-00, and Infiniti model years 2010-01.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the LFR5A-11 is the correct plug for my engine?\u003c\/strong\u003e Check your engine's own maintenance manual to confirm the correct spark plug, since using the wrong plug in place of the NGK LFR5A-11 (stock number 6376) can reduce fuel economy, cut performance, or damage the engine.\u003c\/p\u003e","brand":"NGK Spark Plugs","offers":[{"title":"Default Title","offer_id":49028254728411,"sku":"NGK-LFR5A-11","price":9.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/NGK-LFR5A-11__46013.1558187661.500.750.jpg?v=1785165238","url":"https:\/\/www.goodvibesmarina.com\/products\/ngk-lfr5a-11-spark-plug-stock-6376-standard-copper-core-for-mercury-mariner-yamaha-suzuki-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}