Parts such as the Fuel Tank/fuel Cock (1): Nut,flange,6mm, Tube Fuel Tank(g), Screw-wash.,5x16, Stay,fuel Tank are included in the Gk200k1\qid3\13ya01e7 Fuel Tank/fuel Cock (1) parts fiche.
On this parts fiche the Clip B8,tube is the most specified component.