Parts such as the E-13: Roller, 3.9x12.5, Roller,5x13, Roller 6x13, Shaft R Crank are included in the Cb450k3 Japan E-13 parts fiche.
The Washer is the lowest priced item on this E-13 schematic.
The E-13 assembly is constructed from several parts from which the Crank Shaft is the most expensive.