{"product_id":"champion-rv8c-copper-plus-marine-spark-plug-champion-spark-plug-121","title":"Champion RV8C Copper Plus Marine Spark Plug - Champion Spark Plug 121","description":"\u003cp\u003eThe Champion RV8C is a Copper Plus marine spark plug (Champion Spark Plug Number 121) built as a quality OEM replacement for gasoline marine engines. It uses a copper core center electrode that improves conductivity and gives precise control over heat range, which helps the plug resist overheating under sustained heavy engine loads and extends service life compared to plugs without a copper core.\u003c\/p\u003e\u003cp\u003eThe shell is finished with Champion's patented TinTac and ULTRASEAL coatings for maximum corrosion resistance in the wet, salt-exposed marine environment, and the plug incorporates Champion's patented SAC-9 semiconductor resistor for maximum EMI and RFI suppression, reducing interference with onboard electronics and marine radios. Each RV8C is manufactured to ISO and SAE standards for consistent, proven ignition performance.\u003c\/p\u003e\u003cp\u003eThis is a standard 14mm thread spark plug with an alloy steel shell, sold as a single plug (Unit Count: 1). It is intended as a direct, like-for-like replacement wherever a Champion 121 \/ RV8C spark plug is specified.\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 CCH121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChampion Spark Plug Number:\u003c\/strong\u003e 121\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 14mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell Material:\u003c\/strong\u003e Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShell Coating:\u003c\/strong\u003e TinTac and ULTRASEAL corrosion-resistant coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEMI\/RFI Suppression:\u003c\/strong\u003e SAC-9 semiconductor resistor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 spark plug\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 037551000050\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Champion RV8C spark plug made of?\u003c\/strong\u003e The Champion RV8C (Champion Spark Plug 121) uses a copper core center electrode inside an alloy steel shell, with the shell finished in Champion's TinTac and ULTRASEAL coating for corrosion resistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a copper spark plug?\u003c\/strong\u003e Yes, the RV8C is part of Champion's Copper Plus line, meaning its center electrode has a copper core for increased conductivity and better heat range control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread size does the Champion RV8C use?\u003c\/strong\u003e The Champion RV8C spark plug has a 14mm thread size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spark plugs come in this package?\u003c\/strong\u003e This listing is for a single Champion RV8C spark plug (Unit Count: 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Champion part number for this spark plug?\u003c\/strong\u003e The plug is identified as Champion Spark Plug Number 121, sold under manufacturer part number CCH121.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Champion RV8C spark plug weigh?\u003c\/strong\u003e The Champion RV8C spark plug weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Champion RV8C help with radio or electronics interference?\u003c\/strong\u003e Yes, it includes Champion's patented SAC-9 semiconductor resistor, designed for maximum EMI and RFI suppression to reduce interference with onboard electronics.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Champion RV8C designed for marine use specifically?\u003c\/strong\u003e Yes, the RV8C is marketed as a Copper Plus marine spark plug designed to resist overheating under the heavy, sustained loads typical of marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat standards is the Champion RV8C built to?\u003c\/strong\u003e The Champion 121 \/ RV8C spark plug is built to ISO and SAE standards for proven ignition performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose a copper core plug over other spark plug types?\u003c\/strong\u003e The copper core electrode in the Champion RV8C allows for more accurate control of heat range, which supports longer plug life and more consistent performance under heavy engine loads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Champion 121 spark plug?\u003c\/strong\u003e The Champion RV8C (Champion Spark Plug 121) carries UPC 037551000050.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Champion RV8C an OEM part or aftermarket?\u003c\/strong\u003e The Champion RV8C is manufactured by Champion as a quality OEM-grade replacement spark plug, not a third-party aftermarket substitute.\u003c\/p\u003e","brand":"Champion Spark Plugs","offers":[{"title":"Default Title","offer_id":49027463479515,"sku":"CHA-RV8C","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/RV8C__19418.1722358921.500.750.jpg?v=1785163565","url":"https:\/\/www.goodvibesmarina.com\/products\/champion-rv8c-copper-plus-marine-spark-plug-champion-spark-plug-121","provider":"Good Vibes Marina","version":"1.0","type":"link"}