A sample from the products for the Crankcase Cover 1 include: Oil Seal (20x30x7-371), Holder, P1n, Dowel, O-ring (2h9).
In this schematic the "Washer, Plate (898 Frame)" is used most often.
The Crankcase Cover 1 assembly is constructed from several parts from which the Spacer, Engine Mount is the most expensive.