The Pin is the lowest priced item on this Seat (gs750b) schematic.
Parts such as the Seat (gs750b): Pin, 02112-05127, Lock Assembly,seat, Washer are included in the Gs750en 1977 (b) Usa (e03) Seat (gs750b) parts fiche.
With all the components that make up the GS750EN 1977 (B) USA (E03) SEAT (GS750B) assembly. The Cushion is the most frequently specified with three applications.