Motorad 785-217 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for Mercedes-Benz Cooling Systems

Motorad 785-217 is an integrated housing thermostat assembly built for Mercedes-Benz cooling system service. It combines the thermostat, housing, sensor, and seal in one OE-style replacement for vehicles that require a 217°F opening temperature.

Use this Motorad integrated housing thermostat when servicing Mercedes-Benz E350, C350, ML350, and related applications that call for a direct-fit coolant thermostat housing assembly. The 785-217 follows OEM specifications and uses materials selected for consistent temperature control in demanding engine cooling environments.

Key Features

• Integrated thermostat housing assembly for streamlined cooling system repair
• OE supplier manufacturing with OEM-quality materials and processes
• 217°F temperature rating for specified Mercedes-Benz applications
• Plastic, steel, and copper construction with black finish
• Includes gasket/seal with rubber O-ring design
• Three bolt holes and three outlet ports for application-specific fitment
• Copper case and wax compound for responsive coolant temperature regulation
• Motorad 785-217 cross-references Dorman 15852 and Dorman OE Solutions 902-5844 for the same application

Product Details

The Motorad Integrated Housing Thermostat line is built for vehicles that use a combined thermostat and housing design. This approach supports a cleaner replacement on Mercedes-Benz cooling systems by matching the OE-style layout and specified operating temperature. The 785-217 is engineered for direct replacement service on models such as Mercedes-Benz E350, C350, ML350, GLK350, and GLE350, along with other listed applications.

Motorad 785-217 is a practical choice for drivers and technicians looking for a Mercedes-Benz thermostat housing assembly with the correct 217°F calibration. The integrated design, rubber seal, and copper wax element help maintain stable coolant flow control under normal operating conditions.

Common Cooling System Issues This Part Addresses

• Engine running hotter than normal due to a worn thermostat
• Coolant leaks at the thermostat housing or seal interface
• Temperature fluctuations caused by a failing thermostat element
• Check engine light concerns related to coolant temperature regulation
• Service replacement for cracked or aged integrated housing components

Installation Notes and Tips

Verify the OE-specified temperature rating and housing style before installation. This assembly includes the thermostat, housing, sensor, and seal for listed applications, but mounting hardware is not included. Inspect the mating surfaces, replace degraded coolant as needed, and confirm all hose connections are secure before returning the vehicle to service.

Compatible With Mercedes-Benz applications including 2008 C280, 2011 R350, 2012-2016 E350, 2012-2015 C350, 2012-2015 ML350, 2013-2015 GLK300, 2013-2015 GLK350, 2014-2015 S400, 2016-2019 GLE350, and other listed models. Motorad 785-217 is also referenced by part number 785-217 for catalog matching.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, this thermostat housing assembly is built to meet the demands of modern automotive cooling systems. The copper case and wax compound are selected for rapid response to coolant temperature changes, supporting consistent thermal control in Mercedes-Benz service applications.