Motorad
Integrated Housing Thermostat

Motorad 944-189 Engine Coolant Thermostat Housing Assembly

Brand Motorad 944-189
Material Aluminum, steel, copper
Color Silver
Mounting Hardware Included No
Grade Type Regular
Gasket Or Seal Included No
Bleeder Hole No
Bypass Diameter 1.69 in
Bypass Length 1.32 in
Installation Tool Included No
Number Of Bolt Holes 3
Number Of Outlet Ports 1
Outlet Diameter 1.58 in
Temperature 189 deg. f
Temperature (Degree) 189
Product line Integrated Housing Thermostat
Fits Mercedes-Benz · 1 vehicle

OE supplier quality. Built with OEM materials and processes for dependable cooling performance.

Rapid response. Copper case and wax compound react quickly to coolant temperature changes.

Integrated housing design. Combines the thermostat and housing in one assembly for a cleaner replacement.

Cross-references Dorman - OE Solutions 902-5175, Eastern Catalytic 50419 and Motorad 944-189 for the same application. See all 10.

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Integrated Housing Thermostat for Mercedes-Benz Cooling Systems

Motorad 944-189 is an integrated housing thermostat assembly built to OE specifications for precise coolant temperature control. It is listed for the 2002 Mercedes-Benz C230 and uses OEM-style materials and sealing design to match the original cooling system layout.

Key Features

  • Integrated housing thermostat assembly for engine coolant temperature regulation
  • 189°F thermostat rating for OE-specified operating temperature
  • Constructed from aluminum, steel, and copper for durable cooling-system service
  • Offset design with OEM-style sealing approach where applicable
  • Copper case and wax compound for quick response to coolant temperature changes
  • Single outlet port, 3-bolt housing design, silver finish
  • Motorad part number 944-189

Product Details

The Motorad Integrated Housing Thermostat line focuses on OE-style thermostat and housing assemblies that simplify replacement while preserving factory cooling performance. This Motorad 944-189 thermostat housing assembly is manufactured with OEM-quality materials and processes, and it is built to handle demanding automotive cooling conditions. For Mercedes-Benz C230 thermostat housing replacement needs, the 189°F calibration supports the original engine temperature strategy.

This part cross-references Dorman - OE Solutions 902-5175 for the same application. Motorad 944-189 is also referenced by aftermarket listings under 94489.

Common Cooling System Issues It Can Address

  • Engine running cooler or warmer than the specified operating range
  • Delayed coolant temperature response after startup
  • Thermostat housing wear or sealing surface deterioration
  • Coolant temperature control concerns tied to an aging housing assembly
  • Replacement needs on a 2002 Mercedes-Benz C230 with OE-specified 189°F thermostat calibration

Installation Notes and Tips

Verify the engine application, outlet diameter, bypass dimensions, and bolt-hole layout before installation. This assembly does not include mounting hardware, a gasket or seal, or an installation tool, so confirm the required service parts are on hand before beginning the repair. Clean the mating surfaces thoroughly and follow the vehicle service procedure for coolant refill and air bleeding.

Fits 2002 Mercedes-Benz C230, N/A. For Mercedes-Benz C230 thermostat housing replacement, confirm the OE-specified 189°F temperature and housing configuration before installation.

Quality Assurance

Motorad manufactures this thermostat housing assembly to OEM specifications using OE-supplier quality materials and safety standards. The copper case and wax compound are engineered for responsive temperature control in the coolant circuit, supporting consistent operation in the vehicle’s cooling system.

This part fits 1 vehicle
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2002Mercedes-BenzC2302.3LL4N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - OE Solutions — 902-5175Eastern Catalytic — 50419Motorad — 944-189NGK — 944895944899441891112001715A112001715HT189-449P94489