Gates 34718 Engine Coolant Thermostat

Integrated Housing Thermostat for Mercedes-Benz

Gates 34718 is an integrated housing thermostat built for precise engine coolant temperature control. It follows OE Exact specifications and includes the seal needed for the listed applications, making it a direct-fit solution for Mercedes-Benz and Dodge Sprinter cooling system service.

The Gates Integrated Housing Thermostat line focuses on accurate temperature regulation in vehicles that use a thermostat housed as part of the cooling assembly. Gates applies aftermarket engineering to match OE-style fit and function for applications such as Mercedes-Benz G550, GL450, GL550, SL550, CL550, E550, ML550, S450, S550, CLS550, and Dodge Sprinter 2500 and 3500 models.

Key Features

• Part number: 34718
• Integrated Housing Thermostat design
• OE Exact comparison rating
• Start to open temperature: 212°F / 100°C
• Electric thermostat design
• Check valve and jiggle pin/check valve: Yes
• Outlet inside diameter: 1.812 in.
• 2 bolt holes
• 1 seal
• Seal included

Detailed Description

This Gates engine coolant thermostat is engineered for vehicles that use an integrated thermostat housing, helping maintain proper coolant flow and operating temperature. By matching OE Exact requirements, Gates 34718 supports consistent thermal control in the cooling system and is a practical replacement for service on Mercedes-Benz G550, GL450, GL550, SL550, CL550, E550, ML550, S450, S550, CLS550, and Dodge Sprinter 2500 and 3500 applications. This part cross-references Dorman OE Solutions 902-5903 for the same application.

What It Helps Address

• Engine running too cool or too hot
• Temperature fluctuation during normal driving
• Cooling system service on integrated housing thermostat setups
• Thermostat response issues in electric cooling control systems
• Fitment problems caused by worn OE-style thermostat housings

Installation Notes and Tips

• Verify the OE temperature rating and housing style before installation.
• Inspect the mating surfaces and cooling passages for deposits or damage.
• Replace coolant as needed during thermostat service.
• Confirm the electrical connection and check valve orientation match the original setup.
• Use the listed fitment notes for 212 Degree, OE Temperature applications.

Quality Assurance

Gates develops integrated thermostat housing solutions to meet the needs of modern OE-style cooling systems. Part number 34718 is built to OE Exact standards for the listed vehicles and applications.