Of all the components used in this assembly the Propeller Assy (3x14"x20"-p) is the most expensive.
A sample from the products for the Lower Casing. Drive 2 include: Propellar Assy (3x14"x22"-p), Propeller Assy (3x14"x28"-p), Washer (6e5), Spacer 2.
The most reasonably priced component used on the 115/130tlra/115txra 2002 Lower Casing. Drive 2 is the Clamp (6e5).