Parts such as the Piston-crankshaft: Nut, Bearing(14x18x19.8), Bearing(20x52x15), Key are included in the K10p K11p K15p 1968 Usa (e03) Piston-crankshaft parts fiche.
Of all the components used in this assembly the Bearing(20x52x15) is the most expensive.
Of all the components that make up this Piston-crankshaft the Key has the lowest price.