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Add to CartChampion marine spark plugs are quality OEM replacements. The Champion RN12YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark plugs are designed to resist overheating under heavy engine loads.
Built to ISO and SAE standards for proven performance.
Champion Spark Plug # 404
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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