Gates 34810 Engine Coolant Thermostat

OE Type Thermostat for Audi and Volkswagen

Gates 34810 is an OE Type Engine Coolant Thermostat built for precise temperature control and a leak-resistant OEM-equivalent fit. It is specified for BEHR back housing applications and 203-degree operation, making it a direct-match cooling system service part for select Audi A3, A4, A5, A6, Q5, allroad, S3, and Volkswagen Eos, GTI, Passat, Passat CC, and Tiguan models.

The Gates OE Type Thermostat line focuses on factory-style fit and stable coolant regulation. This part number, 34810, uses a reverse poppet design with a steel and copper construction, O-ring seal type, and a jiggle pin weep hole for service-friendly air bleeding during installation.

Key Features

• OE Type Engine Coolant Thermostat for factory-style cooling system service
• 203°F / 95°C start-to-open temperature
• Reverse poppet design for OE-style coolant flow control
• Steel and copper construction
• O-ring seal type with one jiggle pin weep hole
• OE Performance comparison rating
• Fits BEHR back housing applications noted in the vehicle listing

Detailed Description

Gates 34810 is engineered for vehicles that require accurate coolant temperature regulation to maintain proper engine operating range. The thermostat opens at 203 degrees, helping the cooling system respond at the specified temperature for the listed Audi and Volkswagen applications. Its OE Type construction supports a direct replacement approach for service work on models such as the 2009-2015 Audi A4 and A4 Quattro, 2010-2016 Audi A5 and A5 Quattro, and 2009-2015 Volkswagen Tiguan.

This part cross-references Motorad 708-203 for the same application. Gates 34810 also cross-references OE-style part numbers 06J121113A and 06J121113C. Use this thermostat when servicing a 203-degree OE temperature cooling system that calls for a reverse poppet thermostat with an O-ring seal.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant circulation at the specified opening temperature
• Temperature fluctuation from a sticking thermostat
• Coolant seepage at the thermostat sealing surface
• Cooling system service on BEHR back housing applications

Installation Notes and Tips

• Verify the vehicle uses the listed BEHR back housing configuration before installation.
• Confirm the OE temperature requirement is 203°F / 95°C.
• Inspect the sealing surface and O-ring seat before assembly.
• Use proper coolant bleeding procedures; the jiggle pin weep hole is present to assist with air purge.
• Match the thermostat to the exact Audi or Volkswagen application shown in the fitment list, including A3, A4, A5, A6, Q5, allroad, S3, Eos, GTI, Passat, Passat CC, and Tiguan coverage.

Quality Assurance

Gates OE Type Thermostats are built to deliver precise temperature control and OEM-equivalent fit for the listed applications. Part number 34810 is designed to meet OE-style service expectations for compatible Audi and Volkswagen cooling system repairs.