Dorman 902-1033 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Classic Ford Cooling Systems

Dorman 902-1033 is a replacement engine coolant thermostat housing built for specified Ford, Lincoln, and Mercury applications. It matches the stock housing’s fit and durability requirements while using a metal construction that is made to handle repeated temperature swings in the cooling system.

Compatible with classic Ford LTD, Mustang, Thunderbird, and F-150 applications, this thermostat housing includes a gasket and an air vent (bleeder valve) for service-friendly cooling system maintenance. The natural-finish metal housing is designed around the original mounting layout and outlet size for a direct replacement on listed vehicles.

Key Features

• Brand: Dorman
• Part number: 902-1033
• Metal thermostat housing with natural finish
• Outlet port diameter: 1.5 in.
• Gasket included; thermostat not included
• Air vent (bleeder valve) included
• 2 mounting holes with 0.313 in. diameter
• Housing neck angle: 180 degrees

Detailed Description

This Dorman 902-1033 engine coolant thermostat housing is engineered as a direct replacement for the original housing used on a wide range of classic Ford, Lincoln, and Mercury vehicles. It is a practical choice for cooling system service on applications such as the 1969-1978 Ford LTD, 1969-1971 Ford Mustang, 1968-1976 Ford Thunderbird, and 1977 Ford F-150. The metal body is selected for durability, and the included gasket helps support a proper seal at installation.

This part cross-references Carlson 7125 and StrongArm 4215 for the same application. Dorman 902-1033 is also listed for Mercury Marquis, Mercury Cougar, Mercury Montego, Mercury Colony Park, Mercury Marauder, Lincoln Continental, and Ford E-Series and F-Series applications shown in the fitment data.

Common Cooling System Issues It Can Address

• Cracked or warped thermostat housing
• Coolant seepage at the housing-to-engine sealing surface
• Corrosion or deterioration in the original housing
• Improper thermostat housing fit after prior repairs
• Bleeding air from the cooling system during service

Installation Notes and Tips

Verify the outlet port diameter, mounting hole spacing, and housing neck angle against the original part before installation. Clean the mating surface thoroughly, replace the thermostat if service calls for it, and follow the vehicle service procedure for refilling and bleeding the cooling system. The housing includes a gasket; bolts are not included.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the stock part on specified vehicles and to withstand extreme temperature changes for extended service life.

Fits 1969-1978 Ford LTD, N/A; fits 1969-1971 Ford Mustang, N/A; fits 1968-1976 Ford Thunderbird, N/A; fits 1977 Ford F-150, N/A.