Gates 34860 Engine Coolant Thermostat

Integrated Thermostat Housing for Mercedes-Benz

The Gates 34860 integrated housing thermostat is built for precise coolant temperature control in vehicles that use an integrated thermostat assembly. It is a direct-fit style solution for select Mercedes-Benz applications, including CLA250, CLA45 AMG, GLA250, GLA45 AMG, and A180 models listed below.

• Integrated Housing Thermostat design for modern cooling systems
• Start-to-open temperature: 207°F / 97°C
• Electric thermostat configuration
• Two bolt holes for mounting
• One seal included in the assembly design
• No jiggle pin weep hole and no check valve
• OE Performance comparison rating
• Outlet sizes listed across multiple connections for application-specific routing

Gates Integrated Housing Thermostat Line

Gates focuses on integrated thermostat housings as more late-model engines move to this design. The 34860 part number is part of the Gates Integrated Housing Thermostat line, which emphasizes accurate temperature regulation and OE-style fitment for cooling system service. For shoppers searching for a Gates 34860 thermostat housing or a Mercedes-Benz integrated thermostat housing replacement, this part is built around the factory-style configuration used on the covered vehicles.

Detailed Product Overview

The Gates 34860 engine coolant thermostat is engineered for vehicles that rely on an integrated housing rather than a separate thermostat and housing setup. Its 207-degree opening point helps maintain the engine’s operating temperature within the expected range, supporting stable coolant flow control in turbocharged and performance-oriented Mercedes-Benz applications. This part cross-references Motorad 936-207 for the same application.

Compatible With 2014-2018 Mercedes-Benz CLA250, N/A; 2014-2018 Mercedes-Benz CLA45 AMG, N/A; 2015-2018 Mercedes-Benz GLA250, N/A; 2015-2017 Mercedes-Benz GLA45 AMG, N/A; and 2013 Mercedes-Benz A180, N/A. Common search phrases include Mercedes-Benz CLA250 thermostat housing replacement, Mercedes-Benz GLA250 engine coolant thermostat, and Gates 34860 integrated housing thermostat for Mercedes-Benz.

What It Helps Address

• Engine running too cool or too warm due to thermostat control issues
• Temperature fluctuation from a worn integrated thermostat assembly
• Coolant flow problems tied to an aging housing-style thermostat
• Check-engine concerns related to cooling system temperature regulation
• Service needs on Mercedes-Benz CLA250, CLA45 AMG, GLA250, GLA45 AMG, and A180 cooling systems

Installation Notes and Tips

Verify the outlet diameters, bolt-hole count, and electric thermostat configuration against the original part before installation. Confirm the vehicle’s model year and engine cooling layout, especially on Mercedes-Benz CLA250 and GLA250 applications, since integrated thermostat housings are application-specific. Inspect the mating surfaces and cooling system condition during service to help ensure proper sealing and temperature control.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications with OE-style performance in mind. The 34860 is listed with OE Performance comparison and is intended for the factory-style cooling system setup used on the vehicles shown above.