Motorad 669-212 Engine Coolant Thermostat Housing Assembly

Integrated Thermostat Housing for Mercedes-Benz Cooling Systems

The Motorad 669-212 integrated housing thermostat is built for Mercedes-Benz and Sprinter cooling system service where precise coolant control matters. It combines the thermostat, housing, sensor, and gasket in one OE-style assembly for a direct replacement on listed applications.

Motorad’s Integrated Housing Thermostat line focuses on OE-spec fit and temperature response for modern engine cooling systems. This 212°F unit uses OEM-style materials and sealing features to support consistent coolant flow control in demanding driving conditions.

Key Features

• Integrated engine coolant thermostat housing assembly
• Opening temperature: 212°F
• Bleeder hole and jiggle pin included for air relief
• 2-bolt housing design with 1 outlet port
• Gasket/seal included
• Housing material blend includes aluminum, stainless steel, and copper
• Silver finish
• OE-style construction and sealing details

Detailed Description

The Motorad 669-212 is an engine coolant thermostat housing assembly engineered for OE-style replacement service. Its copper case and wax compound are used to respond quickly to coolant temperature changes, while the offset design and air relief features help support proper system bleeding during installation. This part cross-references Dorman OE Solutions 902-5903 and Four Seasons 56692 for the same application.

Fits 2009-2015 Mercedes-Benz G500, N/A; Fits 2009-2015 Mercedes-Benz G550, N/A; Fits 2013 Mercedes-Benz G63 AMG, N/A; Fits 2012-2013 Mercedes-Benz GL450, N/A; Fits 2007-2010 Mercedes-Benz GL450, N/A; Fits 2008-2013 Mercedes-Benz GL550, N/A; Fits 2007-2012 Mercedes-Benz CL500, N/A; Fits 2008-2012 Mercedes-Benz GL500, N/A; Fits 2007-2012 Mercedes-Benz SL500, N/A; Fits 2007-2012 Mercedes-Benz SL550, N/A; Fits 2011 Mercedes-Benz E550, N/A; Fits 2008-2011 Mercedes-Benz ML500, N/A; Fits 2008-2011 Mercedes-Benz ML550, N/A; Fits 2007-2011 Mercedes-Benz S500, N/A; Fits 2007-2011 Mercedes-Benz S550, N/A; Fits 2007-2010 Mercedes-Benz CL550, N/A; Fits 2008-2009 Mercedes-Benz S450, N/A; Fits 2007-2008 Dodge Sprinter 2500, N/A; Fits 2007-2008 Dodge Sprinter 3500, N/A.

Common Repair Uses

• Restores proper engine coolant temperature regulation
• Addresses thermostat housing leaks at the coolant outlet
• Helps correct overheating caused by a sticking thermostat
• Supports repair of air pockets in the cooling system
• Replaces worn OE-style housing and seal components

Installation Notes and Tips

Verify the 212°F temperature rating and outlet diameter before installation. Inspect the mating surfaces, use the included gasket/seal, and follow the vehicle service procedure for coolant bleeding so the system is free of trapped air. Confirm connector and sensor transfer requirements against the original assembly before removal.

Quality Assurance

Manufactured to OEM specifications and processes by an OE supplier, this thermostat housing assembly is built with OEM-quality materials and safety standards for Mercedes-Benz and Dodge Sprinter cooling system service.