Gates 34042 Engine Coolant Thermostat

Integrated Cooling Control for Ford Applications

The Gates 34042 integrated housing thermostat is built for vehicles that use an electronic-controlled thermostat assembly. It helps regulate engine coolant temperature at the OE 208-degree opening point, supporting stable operating temperature in Ford, Mercury, Mazda, and Lincoln applications.

Gates’ Integrated Housing Thermostat line focuses on OE-style temperature control in modern cooling systems where the thermostat and housing are combined. Part number 34042 is an OE Performance replacement for applications that require an integrated housing design with electronic control and a sealed assembly.

Key Features

• Integrated housing thermostat design for modern cooling systems
• OE Performance rating for factory-style temperature control
• Starts to open at 208°F / 98°C
• Electronic thermostat configuration
• Check valve design with one jiggle pin/check valve
• Three bolt-hole mounting pattern
• Outlet inside diameter: 1.12 in.
• Outlet outside diameter: 1.38 in.
• Includes one seal

Detailed Description

The Gates 34042 thermostat is engineered for vehicles using an integrated thermostat housing and electronic coolant control. By maintaining the OE opening temperature, it helps the engine reach and hold the correct operating range, which is important for consistent cooling-system performance and drivability. This part cross-references Dorman OE Solutions 604-208 for the same application.

Compatible With 2005-2014 Ford Escape, 2006-2014 Ford Fusion, 2003-2011 Ford Focus, 2001-2011 Ford Ranger, 2008-2011 Mercury Mariner, and other listed Ford, Mercury, Mazda, and Lincoln models that use the same electronic integrated housing thermostat setup. The Gates 34042 is also listed for 2011-2012 Lincoln MKZ and 2007-2009 Mazda B2300 applications.

Common Problems This Part Can Address

• Engine running too cool or too warm due to thermostat control issues
• Temperature fluctuation from a worn integrated housing assembly
• Cooling-system fault codes related to electronic thermostat operation
• Slow warm-up or unstable cabin heat output
• Coolant flow control problems in OE-style integrated housing systems

Installation Notes and Tips

Verify the vehicle uses an electronic-controlled integrated housing thermostat before ordering. Match the 208-degree opening temperature, three-bolt mounting pattern, and outlet dimensions to the original part. Inspect the mating surfaces and cooling system condition during replacement, and confirm the seal seats correctly before refilling and bleeding the system.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications to provide an OE-style alternative for vehicles that no longer use a separate thermostat and housing arrangement. Part number 34042 is built to OE Performance expectations for temperature regulation and fitment consistency.