Motorad
Integrated Housing Thermostat

Motorad 634-180 Engine Coolant Thermostat Housing Assembly - Upper

Brand Motorad 634-180
Position Upper
Bleeder Hole No
Bolts Included No
Color Black
Gasket or Seal included Yes
Gasket/Seal Material Rubber
Gasket/Seal Material Rubber
Hardware included No
Installation Tool Included No
Jiggle Pin Included No
Material Plastic, Stainless Steel, Copper
Mounting Hardware Included No
Number Of Bolt Holes 3
Number Of Outlet Ports 1
Number Of Seals 1
Opening Temperature 180
Outlet Diameter 1.35 in
Start to Open Temperature 180 Deg. F
Temperature 180 Deg. F
Temperature (Degree) 180
Product line Integrated Housing Thermostat
Fits Toyota · 52 vehicles

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

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

Seal included. Rubber gasket helps provide a secure, leak-resistant fit.

Cross-references Dorman - HELP 56348, Dorman - OE Solutions 902-5148 and Four Seasons 85952 for the same application. See all 15.

$38.36Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

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Step 2 — Quantity
Order total $38.36
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Integrated Thermostat Housing for Toyota Cooling Systems

Motorad 634-180 is an integrated housing thermostat assembly built to OE specifications for Toyota cooling systems. It combines the thermostat, housing, and seal in one service part for direct replacement on select Toyota 4Runner, Tacoma, FJ Cruiser, and Tundra applications.

The Motorad Integrated Housing Thermostat line focuses on OE-style fit and temperature control, using OEM-quality materials and manufacturing processes. This 180 degree thermostat housing assembly is built with a copper case and wax compound for quick response to coolant temperature changes, along with an offset design and OEM-style sealing where applicable.

  • 180 degree Fahrenheit opening temperature
  • Integrated thermostat, housing, and seal design
  • Black housing with plastic, stainless steel, and copper construction
  • 3 bolt holes and 1 outlet port
  • Rubber gasket/seal included
  • 1.35 in outlet diameter
  • OE-style replacement for select Toyota cooling system service

Detailed Product Overview

Motorad 634-180 is an engine coolant thermostat housing assembly designed for direct-fit service on select Toyota models. It is engineered to meet OEM specifications and uses an OE supplier manufacturing approach for consistent fit and temperature regulation. The integrated housing format simplifies replacement on vehicles that use a combined thermostat and housing assembly, including Toyota 4Runner, Tacoma, FJ Cruiser, and Tundra applications.

This part cross-references Dorman OE Solutions 902-5148 for the same application. Motorad 634-180 is also referenced by other aftermarket and OE numbers used for the same Toyota cooling system fitment.

What This Part Helps Address

  • Engine running too cool or too hot from a worn thermostat
  • Coolant leaks at the thermostat housing or seal surface
  • Delayed coolant flow control during warm-up
  • Temperature fluctuation caused by aging thermostat components
  • Service replacement for a cracked or deteriorated housing assembly

Installation Notes and Tips

Verify the vehicle uses an upper thermostat housing configuration before installation. Inspect the mating surface, replace damaged coolant hoses or clamps as needed, and confirm the rubber seal seats evenly before tightening the 3-bolt housing. Follow the vehicle service procedure for coolant refill and air bleeding after installation.

Quality Assurance

Manufactured with OEM-quality materials and safety standards by an OE supplier, this thermostat housing assembly is built to meet OEM specifications and processes for demanding automotive cooling systems. The copper case and wax compound are selected for responsive temperature control in normal service conditions.

This part fits 52 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025Toyota4Runner2.4LL4N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2024Toyota4Runner4.0LV6N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2023Toyota4Runner4.0LV6UpperIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2021Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010Toyota4Runner4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007ToyotaFJ Cruiser4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2006Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2006ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2006ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2005Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2005ToyotaTacoma4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2005ToyotaTundra4.0LV6Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2004Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2003Toyota4Runner4.0LV6N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - HELP — 56348Dorman - OE Solutions — 902-5148Four Seasons — 85952Genuine — 160310P010Motorad — 634-180NGK — 487781601-33523863480963418016031310101603131011HT180-436P63480QRT24TI24282