Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Brand Name: Champion Sub Brand: Copper Plus Product Type: Spark Plug Plug Number: RC12YC Number in Package: 1 pk Brand Compatibility: For Most Kohler Engines Used with Equipment Type: Small Engines Check Gap: 0.032-0.038 in. Packaging Type: Carded Phase: Single-phase