Engineworx Gasket Kit (Full Set) Honda CR125 2003 Engineworx Full Gasket Kits are the new leader in OEM replacement engine gasket kits. Kits include all gaskets and oil seals necessary to rebuild the engine and transmission including head & base gaskets, clutch gaskets, crankcase gaskets where necessary, output shaft, water pump, clutch, shift and starter seals. All 4 Stroke head gaskets use Japanese stainless steel laminated head gasket and Viton valve seals, ensuring the best quality possible.