The most expensive part in this assembly is the Belt,drive.
Check out any of the forty-five Transmission (model M/r E2,4,15,16,17,18,22,25,39,53) components enlisted.
A sample from the products for the Transmission (model M/r E2,4,15,16,17,18,22,25,39,53) include: Washer,lock, Circlip, Bolt, Shaft Comp,drive.