The most expensive part in this assembly is the Cock Assembly,fuel.
Parts such as the Fuel Cock: O Ring,fuel Cock, O-ring, Bolt(6x20), Hose are included in the Ts100 1981 (x) Usa (e03) Fuel Cock parts fiche.
With a quantity of two pieces, the Bolt(6x20) is the most used part in the FUEL COCK diagram.