Some items from this specific schematic: Hose Assy.b,air, O-ring,5.8x1.9, Cover Comp.,drier, Grommet,saddle Ho.
This schematic depicts all components used in the Gl1500 Goldwing 1990 (l) Germany Air Pump partslist.
The most reasonably priced component used on the Gl1500 Goldwing 1990 (l) Germany Air Pump is the Bolt,flange 6x18.