The lowest price component in this Water Pump-thermostat parts-list fiche is the Bolt,flange,6x20.
The sub assemblies and components that make up this Water Pump-thermostat include this Pump Comp,water, the most expensive part.
Some items from this specific schematic: Rub, Thermo Mtg ., Bolt,flange,6x45, Thermostat Assy, Dowel,pin,8x14.