Dorman 902-204 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-204 is a replacement engine coolant thermostat housing assembly for select Ford and Mercury applications. It is built to match the fit and durability of the original housing and is engineered to handle repeated temperature swings in the cooling system.

Compatible With 1997-2001 Ford Explorer, 2001 Ford Explorer Sport, 2001 Ford Explorer Sport Trac, 2001 Ford Ranger, and 1998-2001 Mercury Mountaineer with a plastic housing and thread-in style ECT sensor.

Key Features

• Plastic thermostat housing assembly in black finish
• Includes thermostat and gasket for service replacement
• 190 degree F thermostat opening temperature
• Three mounting holes and three outlet ports
• Upper housing, lower housing, thermostat, gasket, and housing bolts included in the package contents
• Designed for specified Ford Explorer, Ford Ranger, and Mercury Mountaineer cooling system applications

Detailed Description

This Dorman thermostat housing assembly is a direct replacement for the original engine coolant thermostat housing used on select Ford Explorer, Explorer Sport, Explorer Sport Trac, Ranger, and Mercury Mountaineer models. The housing is made from plastic and supplied with the thermostat and gasket, helping restore proper coolant routing and thermostat control in the engine cooling system. Part number 902-204 is also referenced by cross numbers such as Beck/Arnley 147-0062 and Gates CO34736 for the same application.

Use this assembly when servicing a leaking, warped, or heat-damaged thermostat housing on 1997-2001 Ford Explorer and related applications. The 190 degree F thermostat specification matches the intended operating range for the listed vehicles, and the housing layout is configured for a thread-in style ECT sensor.

What It Is Used For

• Replacing a cracked or warped thermostat housing
• Restoring coolant flow control after thermostat failure
• Addressing coolant leaks at the housing or gasket surface
• Correcting overheating caused by a stuck thermostat
• Servicing cooling system components on Ford Explorer, Ford Ranger, and Mercury Mountaineer models

Installation Notes and Tips

Verify engine configuration and sensor style before installation. Clean the mating surfaces thoroughly, inspect the coolant passages for residue or corrosion, and replace coolant as needed after service. Confirm the housing orientation and outlet alignment before tightening the bolts to the specified torque for the vehicle.

Quality Assurance

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