In this schematic the "O Ring,13x2.5" is used most often.
Parts such as the E-16 Water Pipe Thermostat: Clamper,water, Clamp,water Hose, Clamp, Water Hose, Gskt Con Cap are included in the Vf750f Interceptor 1984 (e) E-16 Water Pipe Thermostat parts fiche.
The most expensive part in this assembly is the Pipe, Connecting.