Some items from this specific schematic: O-ring, Clip (806-24356-00), Fuel Cock Assy 1, Hose Clamp Assy.
The lowest price component in this Fuel Tank parts-list fiche is the Clip (806-24356-00).
This Fuel Tank diagram displays the required parts for the Cw50 2004 5ww1 Italy 1c5ww-300e2 Fuel Tank.