The Heater Blower assembly is constructed from several parts from which the Blower Sub-assy is the most expensive.
A sample from the products for the Heater Blower include: Screw Wash 4x16, Bolt Wash 6x24, Screw Tapping 5x16, Blower Sub-assy.
The Bush, is the lowest priced item on this Heater Blower schematic.