Dorman 902-1009 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Focus

This Dorman engine coolant thermostat housing is a replacement cooling system component for select Ford Focus models. Built from black plastic with a 1.25 in. outlet port, it matches the stock housing fit and is engineered to handle repeated temperature swings in daily driving.

• Direct replacement thermostat housing for select Ford Focus cooling systems
• Black plastic construction for OE-style fit and function
• 1.25 in. outlet port diameter
• Three mounting holes with 0.313 in. mounting hole diameter
• Housing neck angles: 30° and 90°
• Thermostat not included
• Gasket or seal not included; O-rings not required

Fitment and Application Details

Fits 2001-2004 Ford Focus, engine coolant thermostat housing for cooling system. Fits 2000 Ford Focus, must use 2001-03 hose to coolant reservoir; cover. This Dorman 902-1009 is a fitment-based replacement for Ford Focus cooling repairs where the original thermostat housing has cracked, warped, or begun leaking. This part cross-references Dayco 85027 for the same application.

What This Part Helps Address

• Coolant leaks at the thermostat housing
• Cracked or heat-damaged plastic housing
• Improper coolant routing at the outlet port
• Cooling system service on a Ford Focus with a worn OE housing
• Replacement needs during thermostat or hose-related repairs

Installation Notes and Tips

Verify the outlet port diameter, mounting hole layout, and housing neck angle before installation. Because the thermostat, gasket or seal, and bolts are not included, transfer or source the required related components as needed for the repair. On 2000 Ford Focus applications, use the 2001-03 hose to coolant reservoir and cover as noted in the fitment data. Confirm the cooling system is fully drained and the mating surfaces are clean before assembly.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the original part on specified vehicles. The housing is built to withstand extreme temperature changes to help extend service life in normal cooling system operation.