Champion UL18V Marine Spark PlugChampion marine spark plugs are quality OEM replacements. The Champion UL18V 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; Champ Spark Plug # 824Application: Force; 125 HP; 85 HP; Prestolite Ignition 120 HP; Prestolite Ignition 150 HP; Prestolite Ignition 50 HP; Prestolite Ignition 90 HP;