MAJOR ENGINE OVERHAUL KIT FITS: YM1500 AND YM1500D KIT INCLUDES PISTON (2) SLEEVE (2) RING SET (2) ROD BEARING SET (2) UPPER GASKET SET (1) AIR CLEANER COLLAR (1) OIL PAN GASKET (1) MAIN BEARING HOUSING GASKET (1) FRONT CRANKSHAFT SEAL (1) REAR CRANKSHAFT SEAL (1) FRONT COVER GASKET (1) VALVE STEM SEALS (4) FRONT MAIN BEARING (1) REAR MAIN BEARING (1) THRUST BEARING (1 SET) INSULATOR WASHERS (2) INJECTOR CHAMBER WASHERS (4) EXHAUST GUIDE (2) INTAKE GUIDE (2) EXHUAST VALVE (2) INTAKE VALVE (2) AIR FILTER (1) OIL FILTER (1) FUEL FILTER (1)