The component with the lowest price in the F-11 FUEL TANK schematic is the Clip B8,tube.
The Cushion,fr.tank is the most widely applied product in the MTX80RF 1983 (D) F-11 FUEL TANK ( two times ).
Some items from this specific schematic: Filter,cup, Cock Assy,fuel, Tube,fuel 4.5x130, Cap,fuel Filler.