Motorad 939-189 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for Sprinter Cooling

The Motorad 939-189 integrated housing thermostat is built for precise coolant temperature control in demanding cooling systems. It is a direct-fit engine coolant thermostat housing assembly for 2007-2009 Dodge Sprinter 2500 and Sprinter 3500 applications with an OE-specified 189°F operating temperature.

Motorad’s Integrated Housing Thermostat line combines the thermostat, housing, and sealing components in one service part for a cleaner replacement on the Dodge Sprinter cooling system. The design uses OEM-style materials and processes, with a copper case and wax compound for quick reaction to coolant temperature changes.

Key Features

• Part number 939-189 integrated housing thermostat assembly
• OE-specified 189°F temperature rating
• Aluminum, steel, and copper construction
• Silver finish
• Includes gasket/seal with O-ring style sealing
• Bleeder hole for air relief during service
• 3-bolt housing design with 1 outlet port
• Offset design for OE-style fitment

Detailed Product Description

This Motorad thermostat housing assembly is engineered for the Dodge Sprinter 2500 and Dodge Sprinter 3500 cooling system layout used in 2007-2009 model years. The 939-189 uses OEM specifications and includes the thermostat, housing, and seal in an integrated design that helps simplify replacement of the coolant temperature control assembly. The copper case and wax compound are selected to respond quickly to coolant temperature changes, while the air relief valve and OEM-style seals support proper system service.

This part cross-references Dorman OE Solutions 902-3043 for the same application. If you are searching for a thermostat housing assembly for a 2007-2009 Dodge Sprinter 2500 or 2007-2009 Dodge Sprinter 3500, the Motorad 939-189 is a direct replacement option to compare by OE number and fitment.

What It Is Used For

• Restoring correct engine coolant temperature regulation
• Replacing a leaking thermostat housing or worn seal
• Addressing overheating caused by a thermostat that no longer opens at the correct temperature
• Correcting slow warm-up or unstable coolant temperature readings
• Servicing the Dodge Sprinter cooling system with an OE-style integrated housing assembly

Installation Notes and Tips

Fits 2007-2009 Dodge Sprinter 2500, N/A. Fits 2007-2009 Dodge Sprinter 3500, N/A. Confirm the 189°F temperature specification and housing configuration before installation. Inspect the mating surfaces, replace any damaged coolant hoses or clamps as needed, and bleed trapped air from the system using the built-in bleeder hole during refill. Verify the O-ring seal seats correctly and torque fasteners to the vehicle service specification.

Quality Assurance

Motorad manufactures this integrated housing thermostat with OEM-quality materials and OE-supplier production standards. It is built to OEM specifications and processes for service on demanding automotive cooling systems.