With a quantity of four pieces, the O-ring,5.8x1.9 is the most used part in the AIR PUMP diagram.
This schematic depicts all components used in the Gl1200a Goldwing Aspencade 1986 (g) Usa California Air Pump partslist.
The Air Pump assembly is constructed from several parts from which the Pump Assy.,air is the most expensive.