Parts such as the Crank And Piston: Gear,pri Drive, Piston Ring Set (4th O/s) Regular Ring, Piston Ring Set (4th O/s), Crank Assembly (164-11400-00) are included in the Yl2 1967 1968 Usa Crank And Piston parts fiche.
With two applications this Washer (29l) is the most specified part.