Dorman 902-5035 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Toyota Cooling Systems

Dorman 902-5035 is a replacement engine coolant thermostat housing built for specified Toyota applications. It matches the stock housing’s fit and durability requirements and is made to handle repeated temperature swings in the cooling system.

Key Features

• Plastic housing with a black finish
• 1.25 in. outlet port diameter
• 15-degree neck angle for OE-style routing
• Two mounting holes with 0.313 in. diameter
• No gasket or seal included
• No thermostat included
• No bleeder valve and no bolts included
• Package contents: thermostat housing

Detailed Description

This Dorman thermostat housing, part number 902-5035, is engineered as a direct replacement for the original coolant outlet housing used on select Toyota Corolla, Matrix, MR2 Spyder, and Celica models. The plastic construction and OE-style dimensions help maintain proper coolant routing at the thermostat location, while the 15-degree neck angle and 1.25-inch outlet support the factory cooling system layout. This part cross-references Gates CO34836 for the same application.

For buyers searching for a Toyota Corolla thermostat housing replacement, Toyota Matrix coolant thermostat housing, or a Dorman 902-5035 thermostat housing for Toyota Celica and MR2 Spyder, this part is built around the original housing specifications rather than a universal design.

What It Helps Address

• Cracked or warped thermostat housing
• Coolant leaks at the housing outlet
• Improper thermostat housing fit after service
• Cooling system sealing issues caused by aged plastic housing
• Restoration of factory coolant flow routing

Installation Notes and Tips

Verify the outlet diameter, neck angle, and mounting-hole layout before installation. Because no gasket or seal is included, reuse only serviceable sealing components or install the correct replacement seal specified for the vehicle. Clean the mating surfaces thoroughly and inspect the thermostat and adjacent cooling components while the housing is removed.

Compatible With 2003-2009 Toyota Corolla, N/A; 2003-2008 Toyota Matrix, N/A; 2000-2006 Toyota MR2 Spyder, N/A; 2000-2005 Toyota Celica, N/A; and 2000 Toyota Corolla, N/A with 15-degree neck angle and 1.25 in. outlet.

Quality Assurance

Dorman designs replacement cooling-system components to match OE fit and service requirements for specified vehicles. Part number 902-5035 is built to withstand extreme temperature changes to support long service life in the engine cooling system.