Dorman 902-689 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Chrysler, Dodge, Jeep, and Ram

Dorman 902-689 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 metal with a black finish and is engineered to handle repeated temperature swings in the cooling system.

Compatible With Chrysler 300, Dodge Charger, Dodge Challenger, Dodge Durango, Jeep Grand Cherokee, Jeep Commander, Ram 1500, Ram 2500, Ram 3500, Ram 4000, and related applications across 2003-2025 model years. This part number, 902-689, is a direct-fit cooling system housing for vehicles that use a 90-degree outlet neck and a 1.875-inch outlet port.

Key Features

• Metal thermostat housing for cooling system service
• Black finish
• 90-degree housing neck angle
• 1.875-inch outlet port diameter
• 2 mounting holes with 0.375-inch diameter
• No gasket or seal included
• No thermostat included
• No bleeder valve
• O-rings not required

Detailed Description

Dorman 902-689 is engineered as a replacement engine coolant thermostat housing for Chrysler, Dodge, Jeep, and Ram vehicles that require this specific housing design. The metal construction supports durability in high-heat cooling system environments, while the 90-degree neck and specified outlet size help maintain proper coolant routing. Use this housing when servicing the thermostat area on applications such as Chrysler 300, Dodge Charger, Dodge Challenger, Dodge Durango, Jeep Grand Cherokee, and Ram 1500, 2500, 3500, and 4000 models.

This part cross-references Gates CO34827 and Motorad CH7689 for the same application.

What It Helps Address

• Cracked or warped thermostat housing
• Coolant leaks at the housing connection
• Cooling system service on worn original housings
• Improper sealing caused by damaged housing surfaces
• Replacement needs on high-mileage Chrysler, Dodge, Jeep, and Ram cooling systems

Installation Notes and Tips

Verify the outlet port diameter, neck angle, and mounting-hole layout before installation. Transfer or source the required gasket or seal separately, since it is not included. Inspect the mating surfaces, coolant hoses, and thermostat condition during service, and confirm the housing matches the vehicle’s cooling system configuration before reassembly.

Quality Assurance

Dorman designs this thermostat housing to match the fit and durability of the stock part and to withstand extreme temperature changes for extended service life. Part number 902-689 is built for direct replacement use on the listed applications.