Dorman 902-852 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-852 is a replacement engine coolant thermostat housing assembly built to match the fit and durability of the original housing on specified vehicles. It uses a plastic black housing with an integrated thermostat and gasket, and it is engineered to handle repeated temperature swings in the cooling system.

Compatible With Jeep Wrangler, Jeep Wrangler JK, Dodge Durango, and Jeep Grand Cherokee applications that use this thermostat housing design, this Dorman 902-852 assembly supports direct replacement service for the listed vehicles. It includes the thermostat housing, thermostat, and gasket for a complete cooling-system repair path.

Key Features

• Plastic black thermostat housing assembly with integrated cover
• Includes thermostat and gasket for a matched repair setup
• Bleeder hole included for cooling system service
• 1.3 inside diameter with 1 outlet port
• 2 mounting holes with 3.375 bolt hole center spacing
• Thermostat opening temperature: 203 degrees F
• Direct replacement for select Jeep and Dodge cooling system applications

Detailed Description

This engine coolant thermostat housing assembly is designed for vehicles that require a housing with an integrated thermostat and cover. The black plastic construction follows the stock-style layout and is sized to match the original mounting points and outlet configuration. Dorman 902-852 is a practical replacement for cooling system service on 2011-2015 Dodge Durango, 2011-2015 Jeep Grand Cherokee, 2012-2017 Jeep Wrangler, and 2018 Jeep Wrangler JK applications. This part cross-references Gates 34774 for the same application.

What It Helps Repair

• Coolant leaks at the thermostat housing
• Cracked or warped plastic housing surfaces
• Thermostat sticking or incorrect opening temperature
• Bleeding issues after cooling system service
• Overheating caused by a failing housing or thermostat assembly

Installation Notes

Verify the original housing style, outlet location, and mounting-hole spacing before installation. Replace the gasket sealing surface as needed and follow the vehicle service procedure for coolant refill and air bleeding. The bleeder hole helps during system bleeding, but the cooling system should still be checked for trapped air after service.

Quality Assurance

Dorman engineers this replacement housing assembly to match the fit and durability of the stock part on the listed vehicles. It is built to withstand extreme temperature changes for extended service life.