HomeBelts and Cooling > Thermostat and HousingMotorad 501-189 Engine Coolant Thermostat Housing Assembly
Part #: 501-189

Motorad 501-189 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat
⚙️ 13 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Integrated Housing Thermostat
🚗Fitment: Dodge, Freightliner, and Mercedes-Benz, Sprinter 2500, Sprinter 3500, E320, and Sprinter
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Overview of Motorad Integrated Housing Thermostat 501-189

The Motorad Integrated Housing Thermostat 501-189 is engineered for reliable engine temperature regulation in select Dodge and Mercedes-Benz vehicles. Designed to maintain optimal coolant flow, this thermostat housing assembly supports efficient engine performance and temperature control.

  • Engine coolant thermostat housing assembly with integrated thermostat
  • Compatible with Dodge and Mercedes-Benz Sprinter 2500, Sprinter 3500, and E320 models
  • Constructed from durable aluminum, stainless steel, and copper materials
  • Includes a rubber gasket/seal for secure, leak-free installation
  • Features three bolt holes and two outlet ports for precise fitment
  • Thermostat opens at 189°F to regulate engine temperature effectively
  • Silver color finish for corrosion resistance and durability

Detailed Product Description

The Motorad 501-189 thermostat housing assembly integrates a thermostat designed to open at 189 degrees Fahrenheit, ensuring your engine coolant system operates within the correct temperature range. This assembly is constructed from a combination of aluminum, stainless steel, and copper, providing strength and resistance to corrosion. The housing features three bolt holes for secure mounting and two outlet ports with diameters of 1.51 inches and 0.32 inches, accommodating coolant flow requirements for the specified vehicle models.

The included rubber gasket ensures a tight seal between the housing and engine components, preventing leaks and maintaining system integrity. Note that mounting hardware, bolts, and installation tools are not included with this part. The thermostat housing does not have a bleeder hole or jiggle pin, which is consistent with the original equipment design for the compatible vehicles.

Integrated Housing Thermostat Product Line

The Motorad Integrated Housing Thermostat product line combines the thermostat and housing into a single assembly, simplifying replacement and installation. This design reduces potential leak points and ensures precise thermostat operation within the housing. The 501-189 part number is part of this line, offering a direct fit solution for Dodge and Mercedes-Benz Sprinter and E320 models requiring a 189°F opening temperature thermostat.

Common Applications and Issues Addressed

  • Replacement for faulty or leaking thermostat housing assemblies
  • Resolves engine overheating caused by thermostat failure
  • Prevents coolant leaks due to worn or damaged seals
  • Restores proper coolant flow in Dodge Sprinter 2500, 3500, and Mercedes-Benz E320 engines
  • Addresses temperature regulation problems affecting engine performance

Installation Notes and Tips

  • Ensure engine is cool before beginning installation to avoid burns
  • Use the included rubber gasket to prevent coolant leaks
  • Torque bolts to manufacturer specifications; bolts are not included
  • Inspect surrounding hoses and connections for wear during installation
  • Verify thermostat opening temperature matches vehicle requirements (189°F)

Quality Assurance and Warranty

Motorad thermostat housings are manufactured to meet or exceed OEM standards for fit, form, and function. The 501-189 assembly undergoes rigorous quality control to ensure durability and reliable performance in Dodge and Mercedes-Benz vehicles. Warranty coverage details should be confirmed with the distributor or retailer at the time of purchase.

BrandMotorad
Part Number501-189
PositionIntegrated Housing Thermostat
Bleeder HoleNo
Bolts IncludedNo
ColorSilver
Gasket or Seal includedYes
Gasket/Seal MaterialRubber
Gasket/Seal MaterialRubber
Hardware includedNo
Installation Tool IncludedNo
Jiggle Pin IncludedNo
MaterialAluminum, Stainless Steel, Copper
Mounting Hardware IncludedNo
Number Of Bolt Holes3
Number Of Outlet Ports2
Number Of Seals1
Opening Temperature189
Outlet Diameter1.51 in, 0.32 in
Start to Open Temperature189 Deg. F
Temperature189 Deg. F
Temperature (Degree)189

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006DodgeSprinter 25002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2006DodgeSprinter 35002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2006Mercedes-BenzE3203.2LL6N/ATemperature 189F; Includes thermostat, housing, and seal; Alternate Temperature Option; Integrated Housing Thermostat
2006Mercedes-BenzSprinter2.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2005DodgeSprinter 25002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2005DodgeSprinter 35002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2005Mercedes-BenzE3203.2LL6N/ATemperature 189F; Includes thermostat, housing, and seal; Alternate Temperature Option; Integrated Housing Thermostat
2005Mercedes-BenzSprinter2.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2004DodgeSprinter 25002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2004DodgeSprinter 35002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2004Mercedes-BenzSprinter2.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2003DodgeSprinter 25002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat
2003DodgeSprinter 35002.7LL5N/ATemperature 189F - Includes thermostat, housing, and seal - OE Specified Temperature; Integrated Housing Thermostat

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

46418949258501-189501895080146AB5501885964902-51479501189P50189TH1187

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.