The most expensive part in this assembly is the Pump Assy,water.
The sixteen Gl1500 Goldwing 1990 (l) Belgium / Kph Oil Filter/water Pump component parts are all listed in this schematic.
The most reasonably priced component used on the Gl1500 Goldwing 1990 (l) Belgium / Kph Oil Filter/water Pump is the Bolt,flange,6x12.