Gates 34855 Engine Coolant Thermostat

Integrated Thermostat Housing for OE Temperature Control

Gates 34855 is an integrated housing thermostat built for direct temperature regulation in cooling systems that use a combined thermostat and housing design. It is specified at 208 degrees Fahrenheit (98 degrees Celsius) and is engineered to maintain the engine’s operating temperature for consistent cooling-system performance.

This Gates Integrated Housing Thermostat line focuses on aftermarket replacement solutions for vehicles that use integrated thermostat housings, giving technicians a direct-fit option for OE-style service on Ram 1500, Ram 1500 Classic, and Jeep Wrangler applications.

Key Features

• Integrated Housing Thermostat design for vehicles with a combined thermostat and housing assembly
• Start-to-open temperature: 208°F / 98°C
• OE Performance rating for OE-style temperature control
• Outlet inside diameter: 1.36 in.
• Outlet outside diameter: 1.68 in.
• 2 bolt holes for mounting
• No electric actuator, jiggle pin weep hole, or check valve

Product Details

Gates 34855 is an engine coolant thermostat assembly designed to regulate coolant flow based on temperature. By opening at the specified 208-degree threshold, it helps the engine reach and maintain its intended operating range. This part cross-references Mopar 68253514AA for the same application. Common search terms for this part include 208 degree thermostat housing for Ram 1500, integrated thermostat housing for Jeep Wrangler, and OE temperature coolant thermostat for Ram 1500 Classic.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat assembly
• Cooling-system service needs on integrated housing applications
• OE-style replacement needs for Ram and Jeep cooling systems
• Fitment-specific replacement for vehicles using a 208-degree thermostat

Installation Notes and Tips

• Verify the housing style, outlet dimensions, and bolt-hole count before installation.
• Confirm the vehicle uses a 208°F / 98°C thermostat specification.
• Inspect the cooling system for contamination, leaks, or damaged mating surfaces during service.
• Bleed the cooling system according to the vehicle manufacturer’s procedure after installation.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications and positions this part as an OE Performance replacement. Compatible vehicle coverage includes Fits 2014-2018 Ram 1500, N/A; Fits 2019 Ram 1500 Classic, N/A; Fits 2020-2023 Ram 1500, N/A; Fits 2014-2018 Jeep Grand Cherokee, N/A; and Fits 2020-2022 Jeep Wrangler, N/A.