The Crankcase is made up of components including this Crankcase Assy which is the most expensive.
The Yamaha CRANKCASE has sixteen products enlisted in the schematic.
A sample from the products for the Crankcase include: Bolt, Stud (22f), Pipe, Breather 2, Gasket (4v2) (nas), Gasket 256113960000 (nas).