Head Gasket 10 12 14hp for Kohler K241 K301 K321 237658S 4704110-S 4704115-SOne New Aftermarket Replacement Metal Head Gasket for Kohler K Series and Magnum Engines This metal cylinder head gasket seals between the cylinder head and engine block on Kohler K Series cast iron and Magnum single cylinder engines ranging from 10 to 14 HP. Designed to restore compression and prevent oil and combustion gas leakage, it is a direct fit aftermarket replacement for the Kohler K241, K301, K321, M10, M12, and M14 engine families commonly