Parts such as the Gasket Kit B: Gasket,water Pump (nas), O-ring,89x4.5, O-ring,23x2.1, O-ring are included in the Gl1200a Goldwing Aspencade 1986 (g) Usa California Gasket Kit B parts fiche.
On this parts fiche the O-ring,23x2.1 is the most specified component.
The thirty-two Gl1200a Goldwing Aspencade 1986 (g) Usa California Gasket Kit B component parts are all listed in this schematic.