Dorman 902-685 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-685 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified vehicles. It includes the thermostat and gasket, and the metal housing is made to handle repeated temperature swings in daily cooling-system operation.

Key Features

• Metal thermostat housing with natural finish
• Includes thermostat and gasket for a complete housing service
• Thermostat opening temperature: 192 degrees F
• Two mounting holes with 3.53 in. bolt hole center spacing
• One outlet port; no bleeder hole
• Fits Ford E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, E-350 Club Wagon, and Excursion applications listed below

Detailed Description

This Dorman thermostat housing assembly is engineered for direct replacement on select Ford trucks and SUVs, including 2004-2010 Ford E-350 Super Duty, 2003-2007 Ford F-250 Super Duty, 2003-2007 Ford F-350 Super Duty, 2004-2005 Ford E-350 Club Wagon, and 2003-2005 Ford Excursion. The metal construction, integrated thermostat, and gasket help restore a secure coolant seal and proper thermostat function in the engine cooling system. Dorman 902-685 is a practical choice when the original housing is cracked, warped, or no longer sealing correctly.

This part cross-references Gates 33958 and Motorad 510-192 for the same application.

Common Problems This Part Can Address

• Coolant leaks at the thermostat housing
• Cracked or warped housing surfaces
• Sticking thermostat causing temperature control issues
• Failed gasket seal at the housing flange
• Cooling-system service on Ford E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, E-350 Club Wagon, or Excursion models

Installation Notes and Tips

Verify engine application and housing dimensions before installation. Clean the mating surface thoroughly, inspect the coolant passages, and replace worn hoses or clamps if needed. Refill and bleed the cooling system according to the vehicle service procedure after installation. Confirm the thermostat housing orientation and outlet alignment match the original part.

Quality Assurance

Dorman designs this replacement housing to match the fit and durability of the stock assembly and to withstand extreme temperature changes for extended service life.