The most reasonably priced component used on the Gl1500a Goldwing Aspencade 1996 (t) European Direct Sales / Kph Air Distributor is the Spring,valve.
Some items from this specific schematic: Mount,air Sensor, Washer,cap, Screw-wash.,5x12, O-ring Leveling.
The most expensive part in this assembly is the Distributor Assy..