Parts such as the Air Cleaner: Cap,air Cleaner, Cleaner Assembly,air, Pipe,intake, Clamp(l:120) are included in the Gs750 1977 (b) Usa (e03) Air Cleaner parts fiche.
The most reasonably priced component used on the Gs750 1977 (b) Usa (e03) Air Cleaner is the Screw.
This Cleaner Assembly,air is the most expensive of the items that make up this Air Cleaner assembly.