The component with the lowest price in the Crankshaft/Piston(s) schematic is the Pin-dowel,4x8.
The Crankshaft/piston(s) assembly is constructed from several parts from which the Crankshaft-assy is the most expensive.
With a quantity of four pieces, the Circlip-piston Pin is the most used part in the Crankshaft/Piston(s) diagram.
