Dorman 902-5179 Engine Coolant Thermostat Housing Assembly - Water Pump

Engine Coolant Thermostat Housing for Audi and Volkswagen

Dorman 902-5179 is an engine coolant thermostat housing assembly built for specified Audi and Volkswagen applications. It matches the stock housing’s fit and durability requirements and includes the thermostat, gasket, and integrated cover for a direct replacement on the listed vehicles.

Key Features

• Plastic thermostat housing in black finish
• Includes thermostat and gasket for the listed application
• Five mounting holes with integrated cover design
• Outlet port quantity: 1
• Thermostat opening temperature: 221 degrees
• Designed for the water pump position on confirmed fitments
• Part number: 902-5179

Detailed Description

This Dorman engine coolant thermostat housing assembly is engineered for Audi A6 Quattro, S6, A8 Quattro, Q7, S8, and Volkswagen Touareg models listed below. The housing is made from plastic and uses a gasket seal to help maintain a secure coolant connection at the thermostat location. With the thermostat included and a 221-degree opening temperature, this assembly supports proper coolant flow control in the engine cooling system. Part number 902-5179 is a direct-fit replacement for the specified water pump applications and cross-references Motorad 941-221 for the same application.

Fits 2007-2011 Audi A6 Quattro, Water Pump. Fits 2007-2011 Audi S6, Water Pump. Fits 2007-2010 Audi A8 Quattro, Water Pump. Fits 2007-2010 Audi Q7, Water Pump. Fits 2007-2010 Audi S8, Water Pump. Fits 2007-2009 Volkswagen Touareg, Water Pump. Fits 2011-2017 Volkswagen Touareg, Water Pump.

Common Cooling System Issues It Can Address

• Cracked or leaking thermostat housing at the coolant outlet
• Failed thermostat causing incorrect engine warm-up behavior
• Coolant seepage around the housing gasket surface
• Temperature control problems tied to a worn housing assembly
• Replacement needs after service on the water pump area

Installation Notes and Tips

Verify the vehicle year, make, model, and water pump application before installation. Inspect the mating surfaces, coolant passages, and adjacent hoses for wear or contamination before fitting the new housing. Use the included gasket during assembly and confirm all mounting points align correctly with the original configuration. After installation, refill and bleed the cooling system according to the vehicle service procedure.

Quality Assurance

Dorman designs this thermostat housing assembly to match the fit and durability of the original housing on the listed vehicles. The housing is built to handle repeated temperature changes found in engine cooling service, helping maintain reliable operation in Audi and Volkswagen cooling system repairs.