The lowest price component in this Oil Pump - Primary Drive Gear parts-list fiche is the Bolt,hex 6x8.
The Oil Pump - Primary Drive Gear is made up of components including this Pump Assy.,oil which is the most expensive.
This schematic depicts all components used in the Cx500c Custom 1981 (b) Germany / 27ps Oil Pump - Primary Drive Gear partslist.