Some items from this specific schematic: Bolt,flange,6x14, Pulley Comp,t/b D, Cover,l Front, Washer,12x33x4.
The most reasonably priced component used on the Gl1500 Goldwing 1990 (l) Italy / Kph Front Cover/timing Belt is the Bolt,flange,6x14.
This FRONT COVER/TIMING BELT assembly utilises eight Bolt,flange,6x25(s) - the highest specified component.