The lowest price component in this Oil Pan/oil Pump parts-list fiche is the Washer,plug,drain 12.
This OIL PAN/OIL PUMP assembly utilises twelve Bolt,flange,nshf,(s) - the highest specified component.
Some items from this specific schematic: Oil Pan, Chain,oil Pump, Bolt-washer,6x12, Bolt,flange,6x40.