Gates 34775 Engine Coolant Thermostat

OE Exact Thermostat for Audi and Volkswagen

Gates OE Exact Thermostat 34775 is built as an OEM-style replacement for vehicles that require the exact thermostat fit, function, and design. It is a 203-degree engine coolant thermostat with a bottom by-pass design, steel and copper construction, and an included O-ring seal for a precise cooling system service.

This Gates OE Exact Thermostat line is aimed at drivers and technicians who want a direct replacement thermostat that matches the original application requirements. It is compatible with select Audi A3, A4, A5, A6, Q5, allroad, S3, and Volkswagen Tiguan, GTI, Passat, and Eos models with BEHR back housing applications.

Key Features

• OE Exact Thermostat design for OEM-style fit, function, and layout
• 203-degree start-to-open temperature for specified factory cooling calibration
• Bottom by-pass design for the listed cooling system applications
• Steel and copper construction for thermostat durability
• O-ring seal type included for sealing at installation
• Jiggle pin weep hole included for air bleed support during service
• Cross-reference application: 06J121113C, TX11795D

Detailed Description

Gates 34775 is an engine coolant thermostat designed for OE-style replacement on select Audi and Volkswagen vehicles. It is specified for BEHR back housing applications and matches the original thermostat’s fit, function, and design requirements. The 203-degree opening point supports factory cooling system operation, while the bottom by-pass configuration and O-ring seal help maintain the correct housing interface. This part number is a practical choice for Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, Q5, A3, A3 Quattro, S3, allroad, and Volkswagen Tiguan, GTI, Passat, and Eos service work where the OE thermostat specification is required.

What It Helps Address

• Engine running hotter than normal due to thermostat sticking
• Slow warm-up or unstable coolant temperature control
• Coolant temperature faults tied to thermostat performance
• Cooling system service on BEHR back housing applications
• Replacement of a worn OE thermostat on Audi and Volkswagen models

Installation Notes and Tips

Verify the housing style and OE temperature specification before installation. This thermostat is listed for BEHR back housing applications and uses an O-ring seal; inspect the sealing surfaces and replace any damaged housing components during service. No installation tool is included. Confirm vehicle fitment by year, make, model, and cooling system configuration before ordering. Fits 2009-2015 Audi A4, 2009-2015 Audi A4 Quattro, 2010-2016 Audi A5, 2010-2017 Audi A5 Quattro, 2012-2015 Audi A6, 2013-2015 Audi A6 Quattro, 2013-2015 Audi Q5, 2016 Audi A4 allroad, 2016 Audi allroad, 2009-2013 Audi A3, 2009-2013 Audi A3 Quattro, 2010 Audi S3, 2009-2017 Volkswagen Tiguan, 2017 Volkswagen Tiguan Limited, 2010-2014 Volkswagen GTI, 2011-2016 Volkswagen Eos, and 2010 Volkswagen Passat.

Quality Assurance

Gates OE Exact Thermostat 34775 is engineered to match OEM product fit, function, and design for the listed applications. The OE Exact Thermostat line is positioned as a direct replacement solution for vehicles that require factory-style cooling system performance.