Engine crankcase for Active mopeds. The crankcase is the engine housing that holds the crankshaft, gearbox and lubrication components. The halves are bolted together through a gasket.
Replace it if it has cracks, chipped mating surfaces, stripped threads, or oil leaks. Replacing the crankcase means disassembling the engine. When replacing it, inspect the neighboring parts of the assembly: they often wear out at the same time.
Country of origin: China.
