Motorad CH2931 Engine Coolant Thermostat Housing - Upper

Engine Coolant Thermostat Housing for Prius

Motorad CH2931 is an engine coolant thermostat housing built for OE-style fit and cooling-system reliability. It is made from black plastic and uses a 1.23 in outlet diameter with a 2-hole mounting pattern for the specified application.

Compatible with 2001-2009 Toyota Prius, upper, this Motorad thermostat housing supports the engine coolant water outlet with housing configuration used on these vehicles. The CH2931 is a direct-fit replacement for drivers searching for a Toyota Prius upper coolant thermostat housing or engine coolant water outlet housing replacement.

Key Features

• Engine coolant thermostat housing for the cooling system
• Black plastic construction
• 1.23 in outlet diameter
• 2 mounting holes for the listed application
• OE supplier manufacturing standards
• Thermal shock validated and 100% leak tested
• Meets or exceeds OEM standards

Detailed Description

Motorad CH2931 is engineered as an OE-style engine coolant thermostat housing for the Toyota Prius cooling system. Manufactured by an OE supplier, it is produced to OEM quality standards using proprietary material selected for demanding automotive cooling environments. The housing is thermal shock validated and leak tested to help maintain proper coolant routing and sealing performance in the upper engine coolant water outlet assembly.

This part cross-references Dorman OE Solutions 902-5931 for the same application. If you are replacing a worn or damaged Toyota Prius upper coolant housing, CH2931 provides a direct replacement option for 2001-2009 Toyota Prius models.

Common Replacement Reasons

• Cracked or warped thermostat housing
• Coolant seepage at the upper water outlet
• Damaged plastic housing from heat cycling
• Failed sealing surface in the coolant outlet assembly
• Restoring proper coolant flow routing on a Toyota Prius

Installation Notes and Tips

Verify the outlet diameter, mounting hole count, and upper position before installation. This housing is listed without a gasket or seal and without bolts, so reuse or source the correct sealing components as required by the vehicle application. Inspect the mating surfaces, coolant hoses, and adjacent fittings for wear before reassembly.

Quality Assurance

Motorad manufactures this thermostat housing to meet or exceed OEM standards. The CH2931 is thermal shock validated and 100% leak tested to support dependable performance in automotive cooling systems.