Gates 34838 Engine Coolant Thermostat

Integrated Housing Thermostat for Volkswagen Cooling Control

The Gates 34838 integrated housing thermostat is built for precise engine temperature regulation in applications that use a thermostat and housing assembly together. It is a direct-fit cooling system service part for select Volkswagen models, including Passat, Beetle, Golf, Golf SportWagen, Jetta, and Beetle Cabrio.

Gates focuses on aftermarket thermostat solutions for vehicles equipped with integrated housings, offering an OE-performance replacement for the original cooling control design.

Key Features

• Integrated housing thermostat design for simplified cooling system service
• Start-to-open temperature: 176°F / 80°C
• OE Performance comparison rating
• Check valve and jiggle pin/check valve: yes
• One seal included in the housing assembly design
• Two bolt holes for mounting
• Electric thermostat: no
• Gates part number 34838

Detailed Product Overview

The Gates 34838 thermostat housing assembly is engineered for vehicles that rely on an integrated thermostat housing to manage coolant flow and operating temperature. By regulating when coolant begins to circulate through the radiator, this part helps maintain stable engine temperature under everyday driving and stop-and-go conditions. It is listed for 2010-2014 Volkswagen Golf, 2010-2013 Volkswagen Golf SportWagen, 2005-2013 Volkswagen Jetta, 2012-2016 Volkswagen Passat, 2012-2015 Volkswagen Beetle, 2006-2010 Volkswagen Beetle, and 2010 Volkswagen Beetle Cabrio. This part cross-references Delphi TA3003 for the same application.

As part of the Gates Integrated Housing Thermostat line, this assembly reflects the growing use of integrated thermostat housings in modern cooling systems. The design supports OE-style temperature control and is intended for applications where the thermostat and housing are serviced together rather than as separate components.

Common Cooling System Issues This Part May Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuations caused by a worn thermostat assembly
• Coolant flow control problems related to a damaged housing or internal valve
• Check valve or seal wear in an integrated thermostat housing setup
• Cooling system service needs on Volkswagen Passat, Beetle, Golf, Golf SportWagen, and Jetta models

Installation Notes and Fitment Tips

Compatible with 2012-2016 Volkswagen Passat, N/A; 2012-2015 Volkswagen Beetle, N/A; 2006-2010 Volkswagen Beetle, N/A; 2010-2014 Volkswagen Golf, N/A; 2010-2013 Volkswagen Golf SportWagen, N/A; 2005-2013 Volkswagen Jetta, N/A; and 2010 Volkswagen Beetle Cabrio, N/A. Verify the OE temperature specification and housing style before installation. Clean the sealing surfaces thoroughly and inspect adjacent cooling system components for wear, contamination, or coolant residue before reassembly.

Quality Assurance

Gates develops integrated thermostat housing solutions to meet the needs of vehicles using OE-style combined thermostat and housing designs. The 34838 is built to OE performance expectations for accurate temperature regulation in the listed Volkswagen applications.