Check out any of the twenty-eight E-16 Water Pipe - Thermostat components enlisted.
Parts such as the E-16 Water Pipe - Thermostat: Bolt,special,8mm, Hose A,water, O-ring 13x3, Cap B,conn.pipe are included in the Vf400f 1983 (d) E-16 Water Pipe - Thermostat parts fiche.
The Bolt,flange 6x14 is the lowest priced item on this E-16 Water Pipe - Thermostat schematic.