Of all the components that make up this Air Pump the Filter, Air Pump has the lowest price.
Parts such as the Air Pump: Bolt,flange 6x18, End,piece, Filter, Air Pump, Valve Comp.,air are included in the Gl1500se Goldwing 1993 (p) Usa California Air Pump parts fiche.
In this schematic the "Grommet" is used most often.