A crankcase cover is the housing for the crankshaft in a reciprocating internal combustion engine. In most modern engines, the crankcase and crankcase cover are integrated into the engine block.Crankcase Cover material is the metal:like iron, aluminum and etc,that depending on the application goal, various alloys are being used. Its main universal function is to shield the crankshaft and the connecting rods from debris. In simple two-stroke engines,the crankcase and crankcase cover serve several roles, and they are used as the pressurization chamber for the fuel-air mixture. And most four-stroke engines use a crankcase and crankcase cover too,Unlike a two-stroke (crankcase-compression) engine, the crankcase in a four-stroke engine is not used for the fuel/air mixture. Left Crankcase Cover including Cover, L. CrankcaseCover, L. RR. Crankcase ,Gasket, L. Crankcase Cover ,Cap, A. C. Generator , Cap, 30mm ,Dowel Pin, O-Ring with different size, O-Ring,Bolt, Flange,with different size .Parts of the engine mounted on a motorcycle left crankcase is placed space engine magnetos and other parts of the body are part of the sealing and cooling system constituted. Left crankcase cover is made of Material polymer and glass fiber and steel.We can offer motorcycle left crankcase cover for universal models,Yamaha,YBR125 RX115 RX100 DT175 JOG50 BWS100 Honda C70 C90 CG200, Kawasaki,SUZUKI,KTM,Simson, MZ, etc