The Air Cleaner assembly is constructed from several parts from which the Case Comp.,air/c is the most expensive.
On this parts fiche the Screw,washer,5x16 is the most specified component.
Parts such as the Air Cleaner: Plug,brthr Tube, Pipe,hot Air, Clamp D 12.0 Tube, Seal,hot Air are included in the Gl1500 Goldwing 1989 (k) European Direct Sales / Kph Air Cleaner parts fiche.