Of all the components used in this assembly the Pump Assy,oil is the most expensive.
The most reasonably priced component used on the Gl1800a Goldwing 2001 (1) European Direct Sales Oil Pump is the Bolt,flange,6x16.
A sample from the products for the Oil Pump include: Roller,4x15.8, O-ring,7.8x1.9, Bolt-washer,6x12, Chain,oil Pump Di.