Parts Geek - For 1966 International 1000A Thermostat 99747YVMG. 1966 International 1000A 5.0L V8. 1966 International 1000A 4.3L V8. 1966 International 1000A 3.9L 6 Cyl. Notes: Fail-Safe -- The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.; Temperature 160F; Alternate Temperature Option.
