The lowest price component in this Water Pump parts-list fiche is the Bolt,flange,6x45.
Some items from this specific schematic: Gasket,w-pump Cov, Bolt,flange,6x25, Cover Assy,water, Pump Assy,water.
This WATER PUMP assembly utilises two Bolt,flange,6x25(s) - the highest specified component.
