The E-12 Oil Filter . Oil Pump assembly is constructed from several parts from which the Pump Assy.,oil is the most expensive.
Some items from this specific schematic: Bolt,flg.,6x25, Oil Strainer, Pump Assy.,oil, Collar,o Ring.
The component with the lowest price in the E-12 OIL FILTER . OIL PUMP schematic is the Bolt,soc.flg,6x14.