The Clip B10,tube is the cheapest item from this partsfiche.
Parts such as the Fuel Tank: Washer, 8.3m/m, Spg,fuel Tube, Packing, Screen Set are included in the Cm450a Hondamatic 1982 (c) Usa Fuel Tank parts fiche.
In this schematic the "Cushion Fr Tank" is used most often.