Dorman 902-1029 Engine Coolant Thermostat Housing - Lower

Engine Coolant Thermostat Housing for Ford and Mercury

Dorman 902-1029 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It is made for lower thermostat housing applications and is engineered to handle repeated temperature swings in daily driving and cooling system service.

Compatible With 2001-2011 Ford Ranger, Explorer, Explorer Sport Trac, Mustang, and 2002-2010 Mercury Mountaineer applications, this Dorman thermostat housing supports direct replacement needs where the original plastic housing has cracked, warped, or begun leaking. The 902-1029 housing is a practical OE-style solution for Ford Ranger lower thermostat housing repair and related Ford Explorer cooling system service.

Key Features

• Brand: Dorman
• Part number: 902-1029
• Engine coolant thermostat housing for lower mounting locations
• Plastic housing with black finish
• Outlet port diameter: 1.125 in.
• Housing neck angle: 45 degrees
• Gasket/seal included
• O-rings included
• Six mounting holes with 0.313 in. diameter
• No thermostat included
• No bolts included

Detailed Description

This Dorman 902-1029 engine coolant thermostat housing is designed as a direct replacement for the stock housing on select Ford and Mercury vehicles. It is built from plastic and shaped to match the original lower housing layout, including the 45-degree neck angle and 1.125-inch outlet port diameter. The included gasket and O-rings help support a proper seal during cooling system repair.

Use this thermostat housing on applications such as the Ford Ranger, Ford Explorer, Ford Explorer Sport Trac, Ford Mustang, and Mercury Mountaineer where the lower housing is specified. Cross-reference part numbers include Gates CO34738 and Dorman - Conduct-Tite 85139 for the same application.

What It Helps Repair

• Coolant leaks from a cracked or warped thermostat housing
• Cooling system seepage at the lower housing seal surface
• Overheating caused by housing damage or poor sealing
• Fitment issues during Ford Ranger, Explorer, or Mountaineer thermostat housing replacement
• Service problems related to a worn original plastic housing

Installation Notes and Tips

Confirm the lower housing position, sensor-port style, and vehicle application before installation. This housing does not include a thermostat or bolts, so reuse or source the required components separately as needed. Inspect the mating surfaces, replace damaged hoses or seals, and verify proper coolant fill and bleed procedures after installation.

Quality Assurance

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