A sample from the products for the Crankshaft/piston include: Ring Set,piston O, Shaft Comp,crank, Brg,ndl.28x41x21, Pin,piston.
The lowest price component in this Crankshaft/piston parts-list fiche is the Clip,piston Pin.
In this schematic the "Bearing A,cranksh" is used most often.