Dorman 902-682 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-682 is a replacement engine coolant thermostat housing assembly for select Ford, Lincoln, and Mazda applications. It is built with a black plastic housing, an included gasket seal, and an included thermostat set to open at 180 degrees Fahrenheit for direct-fit cooling system service.

Key Features

• Replacement thermostat housing assembly engineered to match stock fit and durability
• Plastic housing with black finish
• Thermostat included, opening at 180 Deg. F.
• Gasket included for sealing at installation
• 3 mounting holes, 1 outlet port, no bleeder hole
• Package contents: thermostat housing and thermostat assembly
• Cross-reference: Gates 34046

Detailed Description

This Dorman thermostat housing assembly, part number 902-682, is designed for cooling system repair on vehicles such as the Ford Focus, Ford Escape, Ford Fusion, Ford Taurus, Ford Explorer, Ford EcoSport, Lincoln MKC, Lincoln MKT, Lincoln MKZ, Mazda 3, Mazda 5, Mazda MX-5, and Mazda MX-5 Miata. It is shaped to match the original housing layout and uses a plastic construction selected for regular-duty service in high-temperature engine environments. The included thermostat opens at 180 degrees Fahrenheit, helping maintain the factory-style operating range specified for the listed applications.

The housing features a 3.325-inch flange length, 2.8-inch flange width, and 0.466-inch flange thickness, with bolt-hole spacing of 2.08 in., 1.925 in., and 2.986 in. Inside diameters measure 1.105 in. and 0.562 in. This part cross-references Beck/Arnley 143-0838 for the same application.

Common Repair Uses

• Cracked or warped thermostat housing
• Coolant leaks at the housing or gasket surface
• Sticking thermostat causing temperature control issues
• Overheating from restricted coolant flow
• Maintenance on aging Ford, Lincoln, or Mazda cooling systems

Installation Notes and Tips

Verify vehicle-specific fitment before installation, especially on 2013-2018 Ford Focus, 2013-2016 Ford Escape and Fusion, 2013-2016 Lincoln MKC, MKT, and MKZ, and 2004-2013 Mazda 3 applications. Clean the sealing surface thoroughly, inspect adjacent coolant hoses, and refill the cooling system with the correct coolant after service. Mounting hardware is not included.

Quality Assurance

Dorman designs this replacement thermostat housing assembly to match the fit and durability of the original housing on specified vehicles and to withstand repeated temperature cycling for extended service life.