With a quantity of twelve pieces, the Bearing A,cranksh is the most used part in the CRANKSHAFT/PISTON diagram.
Some items from this specific schematic: Nut,conn-rod, Piston (0.25), Shaft Comp,crank, Brg.conn Rod A.
The Crankshaft/piston assembly is constructed from several parts from which the Shaft Comp,crank is the most expensive.