Overhaul Kit / Kohler 14 HP StdPack Size:1Foley/Belsaw 5980222, Prime Line 7-09725Kohler K321; for 14 HP standard horizontal enginesEthanol: Not compatible with greater than 10% ethanol fuel, Included exhaust valve is for recent D series engines — if you have an older engine, use our 505-529 exhaust valve (1.125" head dia.)