1979 Ford E250 Econoline 4.9L 6 Cyl. 1995-1996 Ford E250 Econoline 4.9L 6 Cyl. 1994-1996 Ford E250 Econoline 5.8L V8. 1980-1982 Ford E250 Econoline 5.8L V8 Windsor. 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.
