Dorman 902-421 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-421 is a replacement engine coolant thermostat housing assembly for select Volvo and Land Rover applications. It matches the stock housing’s fit and durability requirements while using a plastic black housing with a gasket seal and integrated thermostat for direct cooling-system service.

Key Features

• Replacement thermostat housing assembly for select Volvo S60, V60, XC60, S80, XC70, XC90, V70, and Land Rover LR2 applications
• Plastic black housing with a regular-grade construction
• Includes thermostat and gasket for a complete cooling-system repair
• Thermostat opening temperature: 195 degrees F
• Two outlet ports, four mounting holes, and no bleeder hole
• Cross-references Dayco 71195 and Gates 34716 for the same application

Detailed Description

This Dorman thermostat housing assembly, part number 902-421, is built for vehicles that need a direct replacement for the original coolant outlet housing. It is engineered to match the stock housing’s fit and service requirements, with dimensions that support proper sealing and coolant routing in the engine cooling system. The included thermostat opens at 195 degrees F, helping regulate engine temperature in normal operating conditions. Fits 2011-2016 Volvo S60, 2015-2016 Volvo V60, 2010-2016 Volvo XC60, 2007-2015 Volvo S80, 2008-2015 Volvo XC70, 2007-2014 Volvo XC90, 2008-2012 Land Rover LR2, and 2008-2010 Volvo V70.

What It Helps Repair

• Coolant leaks at a cracked or warped thermostat housing
• Engine temperature fluctuations caused by a worn thermostat assembly
• Loss of sealing at the housing-to-engine connection
• Cooling-system service needs on Volvo S60, XC60, XC90, and related models
• Replacement of a housing with damaged mounting points or outlet ports

Installation Notes and Tips

Verify the housing shape, outlet-port layout, mounting-hole pattern, and thermostat opening temperature before installation. Replace the gasket seal during service and inspect the mating surfaces for corrosion, residue, or distortion. Confirm vehicle application by year, make, and model before ordering; this part number is 902-421.

Quality Assurance

Dorman designs this thermostat housing assembly to match the fit and durability of the original housing on specified vehicles and to withstand extreme temperature changes for extended service life. Part number 902-421 is a direct-fit cooling-system replacement for the listed applications.