The component with the lowest price in the FUEL TANK schematic is the Clip B8,tube.
Parts such as the Fuel Tank: Screen,strainer, Bolt-washer,6x25, Clip B8,tube, Cap Comp,fuel Fil are included in the Z50j2 Monkey Japan Fuel Tank parts fiche.
This schematic depicts all components used in the Z50j2 Monkey Japan Fuel Tank partslist.