Champion RV92YC Marine Spark PlugChampion marine spark plugs are quality OEM replacements. The Champion RV92YC 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. Resists fouling; Superior corrosion resistance; Dependable and proven performance; Increased conductivity and heat control for good overall wear; Champion Spark Plug # 930Application: Chris Craft; 307 8 cyl. 215 HP; GLV 8 cyl. 215 HP; K 8 cyl. 215 HP;