{"product_id":"champion-rn5c-marine-spark-plug-champion-123-copper-core-14mm-thread-replaces-bombardier-507665","title":"Champion RN5C Marine Spark Plug (Champion 123) - Copper Core, 14mm Thread, Replaces Bombardier 507665","description":"\u003cp\u003eThe Champion RN5C is a copper-core marine spark plug built as a quality OEM replacement for small marine and outboard engines. Also sold under Champion's own plug number 123, this spark plug uses a copper core center electrode that improves conductivity and gives accurate control over heat range, helping the plug resist fouling and wear over repeated heat cycles. Champion designs this plug to resist overheating under the sustained heavy loads typical of marine engine operation, and the shell and electrode materials provide superior corrosion resistance for the wet, salt-exposed environment a boat engine runs in.\u003c\/p\u003e\u003cp\u003eThe Champion RN5C\/123 is commonly specified for Evinrude outboard engines and other small marine and utility engines that call for this plug, and it is built to ISO and SAE standards as an OE-type replacement. It ships as a single spark plug with a 14 millimeter thread, and it directly cross-references to OEM plug numbers used by Bombardier and Kubota, making it a straightforward replacement when your engine manufacturer specifies one of those part numbers instead of the Champion designation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Champion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e RN5C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion Plug Number:\u003c\/strong\u003e 123\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 14 millimeters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 spark plug (pack of 1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 037551000876\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Service Type:\u003c\/strong\u003e Marine, small engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Part Numbers:\u003c\/strong\u003e Bombardier 507665, Kubota 12681-6774-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Non-automotive spark plug guarantee - when installed per Champion recommendations, meets or exceeds the engine manufacturer's warranty requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThe Champion RN5C (Champion 123) is used in Evinrude outboard engines and other small marine engines that call for a Champion RN5C or Champion 123 spark plug with a 14 millimeter thread.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBombardier 507665\u003c\/li\u003e\n\u003cli\u003eKubota 12681-6774-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Champion RN5C spark plug?\u003c\/strong\u003e The Champion RN5C is a copper-core marine spark plug, also sold as Champion plug number 123, designed as an OE-type replacement for small marine and outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Champion 123 the same spark plug as the RN5C?\u003c\/strong\u003e Yes, Champion 123 and Champion RN5C are the same copper-core marine spark plug; 123 is Champion's own plug number for the RN5C.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines is the Champion RN5C spark plug used in?\u003c\/strong\u003e This plug is commonly used in Evinrude outboard engines and other small marine engines that call for a Champion RN5C or Champion 123 spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Champion RN5C cross-reference to any other OEM part numbers?\u003c\/strong\u003e Yes, the Champion RN5C (Champion 123) cross-references to Bombardier part number 507665 and Kubota part number 12681-6774-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the thread size on the Champion RN5C spark plug?\u003c\/strong\u003e 14 millimeters is the thread size of the Champion RN5C (Champion 123) spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat electrode material does the Champion RN5C use?\u003c\/strong\u003e A copper core center electrode is used in the Champion RN5C, which improves conductivity and allows accurate control of heat range for longer wear life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spark plugs come in a package?\u003c\/strong\u003e One Champion RN5C (Champion 123) spark plug ships per pack.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Champion RN5C spark plug weigh?\u003c\/strong\u003e 0.15 pounds is the weight of the Champion RN5C (Champion 123) spark plug.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Champion RN5C a genuine Champion part or an aftermarket copy?\u003c\/strong\u003e The Champion RN5C (Champion 123) is a genuine Champion spark plug, not a third-party aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Champion RN5C resist corrosion and fouling?\u003c\/strong\u003e Yes, the Champion RN5C is built with superior corrosion resistance and is designed to resist fouling under heavy marine engine loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Champion RN5C covered by a warranty?\u003c\/strong\u003e Champion backs the RN5C (Champion 123) with a non-automotive spark plug guarantee; when installed per Champion's recommendations, it meets or exceeds the engine manufacturer's warranty requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the Champion RN5C differ from Champion's Copper Plus RN9YC or RS9YC plugs?\u003c\/strong\u003e The Champion RN5C is a standard copper-core plug, while Champion's RN9YC and RS9YC are Copper Plus plugs that add TinTac and ULTRASEAL shell coating plus a SAC-9 semiconductor for extra corrosion resistance and EMI\/RFI suppression; the RN5C does not include those added coatings.\u003c\/p\u003e","brand":"Champion Spark Plugs","offers":[{"title":"Default Title","offer_id":49027463282907,"sku":"CHA-RN5C","price":3.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-2__50678.1753840688.500.750.jpg?v=1785163562","url":"https:\/\/www.goodvibesmarina.com\/products\/champion-rn5c-marine-spark-plug-champion-123-copper-core-14mm-thread-replaces-bombardier-507665","provider":"Good Vibes Marina","version":"1.0","type":"link"}