Dorman 902-1006 Engine Coolant Thermostat Housing - Lower

Engine Coolant Thermostat Housing for Ford and Mercury

Dorman 902-1006 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It is made from black plastic and engineered to handle repeated temperature swings in the cooling system.

Compatible With 1997-2001 Ford Explorer, 1998-2001 Mercury Mountaineer, and 2001 Ford Explorer Sport in lower housing applications, including versions with threaded sensors where noted. Dorman 902-1006 is a direct-fit cooling system repair part for service work on these vehicles.

Key Features

• Replacement engine coolant thermostat housing for specified Ford and Mercury applications
• Black plastic construction for OE-style fit and function
• 45-degree housing neck angle
• 2.85 outlet port diameter
• Three mounting holes with 0.313 mounting hole diameter
• O-rings included; thermostat not included
• No gasket or seal included, no bolts included, and no bleeder valve

Detailed Description

This thermostat housing is designed for lower cooling system mounting locations on the Ford Explorer, Ford Explorer Sport, and Mercury Mountaineer. It matches the stock housing form factor and is built to withstand extreme temperature changes, helping maintain service life in demanding engine cooling conditions. The Dorman 902-1006 also cross-references Four Seasons 85138 for the same application.

Common Repair Uses

• Cracked or warped thermostat housing
• Coolant leaks at the housing or O-ring sealing surface
• Cooling system service on lower thermostat housing locations
• Replacement after sensor-related housing damage on threaded-sensor applications
• Restoring proper coolant routing on Ford Explorer and Mercury Mountaineer models

Installation Notes and Tips

Verify the lower housing location, outlet port size, and 45-degree neck angle before installation. Transfer or replace any required sensors separately, since bolts, gasket, and thermostat are not included. Clean the mating surfaces thoroughly and inspect the cooling system for related wear before reassembly.

Quality Assurance

Dorman designs this replacement housing to match OE fit and durability for the listed Ford Explorer, Ford Explorer Sport, and Mercury Mountaineer applications. The housing is engineered for temperature cycling common in engine cooling systems and uses included O-rings for sealing support.