The PROX Engine Gasket Set for YAMAHA is a comprehensive kit designed for a complete engine overhaul. This set includes all the necessary gaskets and sealing rings required to rebuild the entire engine and transmission, ensuring a quality equivalent to OEM parts. Please note, crankshaft oil seals are not included and must be purchased separately. Whether you're performing routine maintenance or a full rebuild, this gasket set provides superior durability and reliability to keep your engine running smoothly.