In this schematic the "O-ring,5.8x1.9" is used most often.
The Filter D is the lowest priced item on this Air Pump / Drier 84-85 (1200a/l) schematic.
This schematic depicts all components used in the Gl1200a Goldwing Aspencade 1984 (e) Usa California Air Pump / Drier 84-85 (1200a/l) partslist.