Dorman 902-306 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Jeep and Dodge

Dorman 902-306 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. The aluminum construction and silver finish are made to handle repeated temperature swings in the cooling system, helping maintain a secure thermostat housing seal on Jeep Wrangler, Cherokee, Grand Cherokee, TJ, Comanche, and Dodge Dakota applications.

Key Features

• Aluminum thermostat housing with a silver finish
• Outlet port diameter: 1.511 in.
• Housing neck angle: 95 degrees
• Gasket or seal included
• Two mounting holes with 0.35 in. diameter
• No thermostat, bolts, O-rings, or bleeder valve included

Detailed Description

This Dorman thermostat housing, part number 902-306, is engineered as a direct replacement for the engine coolant thermostat housing used on select Jeep and Dodge cooling systems. It is designed for vehicles including 1991-1995 Jeep Wrangler, 1997-2006 Jeep Wrangler, 1997-2006 Jeep TJ, 1991-2001 Jeep Cherokee, 1993-2004 Jeep Grand Cherokee, 1991-1992 Jeep Comanche, and 1997-2002 Dodge Dakota. The aluminum body helps resist heat-related wear, while the included gasket or seal supports a proper cooling-system connection.

This part cross-references Mopar 53006192 for the same application.

Common Problems This Part Can Help Address

• Coolant leaks at the thermostat housing
• Cracked or warped original housing from heat cycling
• Improper sealing at the cooling system connection
• Corrosion or deterioration of the factory housing
• Cooling system service needs on Jeep Wrangler, Cherokee, Grand Cherokee, TJ, Comanche, and Dodge Dakota models

Installation Notes and Tips

Verify the outlet port diameter, mounting hole layout, and 95-degree neck angle before installation. Transfer or install the thermostat separately, since this housing does not include one. Inspect the mating surface and cooling passages for debris or old gasket material before assembly, and confirm the cooling system is properly filled and bled after service.

Quality Assurance

Dorman replacement housings are built to match the fit and durability of the stock part on specified vehicles. The aluminum construction is selected to withstand extreme temperature changes and support long service life in demanding cooling-system use.