Some items from this specific schematic: Tube G,water, Tube H,water, Bolt,flange,6x14, Joint A,3way.
Of all the components used in this assembly the Sub Harness,eng is the most expensive.
The most reasonably priced component used on the Gl1500a Goldwing Aspencade 1997 (v) Austria / Kph Water Pipe/thermostat is the Bolt,flange,6x14.