The Crankshaft. Piston is made up of components including this Crankshaft Assy which is the most expensive.
Some items from this specific schematic: Piston (std), Washer, Lock(2rh), Piston (0.25mm O/s), Pin, Crank 1.
thirty components are listed in the schematic for this Dt125e 1993 4bl3 France 234bl-351f1 Crankshaft. Piston .