Motorad 788-217 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat Overview

Motorad 788-217 is an engine coolant thermostat housing assembly built for OE-style cooling system service. It combines the thermostat, housing, sensors, and seal in a single integrated design for select Mercedes-Benz applications, including E250, C250, SLK250, C200, E200, C180, and SLK200 models.

The Motorad Integrated Housing Thermostat line focuses on direct-fit cooling system replacement parts made with OEM specifications and processes. This 788-217 assembly uses a copper case and wax compound for quick response to coolant temperature changes, along with an offset design, air relief valve, and OEM-style seals where applicable.

Key Features

• Engine coolant thermostat housing assembly for OE-style replacement
• Opening temperature: 217 Deg. F
• Bleeder hole and jiggle pin included for air management
• Rubber gasket/seal included
• Black housing with plastic, stainless steel, and copper construction
• 5 bolt holes and 3 outlet ports
• Outlet diameters: 0.99 in, 0.99 in, and 1.91 in
• Motorad 788-217 part number for direct identification

Detailed Description

Motorad 788-217 is an integrated thermostat housing assembly engineered for Mercedes-Benz cooling systems that require a 217F opening temperature. It is built with OEM-quality materials and OE-supplier manufacturing standards to match factory specifications for fit and thermal response. The copper thermostat case and wax compound help the unit react quickly to coolant temperature changes, while the integrated housing design simplifies replacement of the thermostat and related sealing components.

Compatible With 2011-2016 Mercedes-Benz E250, N/A; 2012-2015 Mercedes-Benz C250, N/A; 2012-2016 Mercedes-Benz SLK200, N/A; 2012-2015 Mercedes-Benz SLK250, N/A; 2010-2014 Mercedes-Benz C200, N/A; 2012-2013 Mercedes-Benz E200, N/A; and 2011-2012 Mercedes-Benz C180, N/A. This part cross-references Dorman - OE Solutions 902-5177 and Four Seasons 57882 for the same application. Motorad 788-217 is a direct replacement choice for Mercedes-Benz E250 thermostat housing assembly service and Mercedes-Benz C250 coolant thermostat housing replacement.

Common Issues This Part Can Address

• Coolant temperature regulation problems caused by a worn thermostat
• Leaks at the thermostat housing or seal interface
• Air trapped in the cooling system after service
• Delayed thermostat response from aging internal components
• Factory-spec replacement needs for integrated housing applications

Installation Notes and Tips

Verify the 217F temperature specification and outlet configuration before installation. Inspect the mating surfaces, replace any damaged coolant hoses or clamps as needed, and follow the vehicle service procedure for bleeding air from the cooling system using the bleeder hole and jiggle pin features. Confirm the correct Mercedes-Benz application by model year before ordering, since fitment varies by vehicle.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and processes, this thermostat housing assembly is built to meet factory-style cooling system requirements. The integrated design, rubber seal, and OE-specified temperature rating support consistent replacement performance in the listed Mercedes-Benz applications.