The most expensive part in this assembly is the Pump Assy,oil.
The most reasonably priced component used on the Ds80 1983 (d) Usa (e03) Oil Pump is the Screw.
Parts such as the Oil Pump: Gear,oil Pump Drive, Screw, Screw, Hose are included in the Ds80 1983 (d) Usa (e03) Oil Pump parts fiche.