Gates 34721 Engine Coolant Thermostat

Integrated Housing Thermostat for Audi Cooling Control

Gates 34721 is an integrated housing thermostat built for precise engine temperature regulation in select Audi applications. It is an OE-performance replacement that supports stable coolant flow and consistent operating temperature in vehicles such as the Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, and Q5.

Key Features

• Integrated housing thermostat design for direct replacement of the original assembly
• Start-to-open temperature: 190°F / 88°C
• Seven bolt holes for secure mounting
• Outlet inside diameter: 0.802 in; outlet outside diameter: 0.982 in
• Single seal design
• No electric actuator, jiggle pin, or check valve
• OE Performance rating for application-matched operation

Product Details

Gates Integrated Housing Thermostat line focuses on temperature control in modern cooling systems that use a combined thermostat and housing assembly. Part number 34721 is engineered to match OE-style temperature regulation and is listed with a 192-degree operating reference in fitment notes, making it a direct-service option for Audi cooling system repair. This part cross-references Continental 49479 for the same application.

Vehicle Fitment

• Fits 2009-2012 Audi Q5, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2006-2011 Audi A6, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2008-2010 Audi A5, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2008-2010 Audi A5 Quattro, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2005-2009 Audi A4 Quattro, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2005-2009 Audi A6 Quattro, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
• Fits 2005-2008 Audi A4, N/A; 192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat

Common Cooling System Issues It Can Address

• Engine running too cool or too hot due to thermostat control problems
• Temperature fluctuation during warm-up or normal driving
• Coolant flow irregularities caused by a worn integrated housing assembly
• Check engine light concerns related to thermostat performance
• Cooling system service needs on Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, and Q5 models

Installation Notes and Tips

Verify the OE temperature specification, bolt-hole count, and outlet dimensions before installation. Because this is an integrated housing thermostat, inspect the mating surfaces and cooling system seals during service, and confirm the replacement matches the original housing style used on the vehicle.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications to provide an OE-performance alternative for vehicles that use this design. Part number 34721 is built for accurate temperature regulation and consistent cooling-system control.