Motorad
Integrated Housing Thermostat

Motorad 637-180 Engine Coolant Thermostat Housing Assembly - Upper

Brand Motorad 637-180
Position Upper
Bleeder Hole Yes
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 Yes
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 1.20 in
Start to Open Temperature 180 Deg. F
Temperature 180 Deg. F
Temperature (Degree) 180
Product line Integrated Housing Thermostat
Fits Toyota and Lexus · 142 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 and OEM-style seals help simplify installation.

Cross-references Continental 49338, Dorman - OE Solutions 902-5136 and Four Seasons 56378 for the same application. See all 14.

$35.30Free 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.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $35.30
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 and Lexus

Motorad 637-180 is an engine coolant thermostat housing assembly built to OE specifications for select Toyota and Lexus applications. It combines the thermostat, housing, and seal in one integrated design for a direct replacement on vehicles such as the Toyota Tundra, Sequoia, Land Cruiser, and Lexus GX460, LC500, RC F, and LX570.

Key Features

  • 180 degree Fahrenheit opening temperature for controlled coolant flow
  • Integrated housing thermostat design with rubber seal included
  • Bleeder hole and jiggle pin included for air relief during service
  • 3 bolt holes with 1 outlet port and 1.20 in outlet diameter
  • Constructed from plastic, stainless steel, and copper
  • Black housing finish
  • OE supplier manufacturing with OEM-style materials and processes

Product Details

The Motorad Integrated Housing Thermostat line is built for applications that require a complete thermostat housing assembly rather than a standalone thermostat. Part number 637-180 uses a copper case and wax compound to respond quickly to coolant temperature changes, while the offset design and OEM-style seals support proper fitment where specified. This makes it a direct-fit cooling system service part for Toyota Tundra and Lexus GX460, LC500, RC F, and LX570 models that call for a 180F thermostat housing assembly.

This part cross-references Dorman - OE Solutions 902-5136 and Continental 49338 for the same application.

Common Repair Uses

  • Coolant temperature running too low or too high
  • Thermostat housing seepage at the seal surface
  • Delayed engine warm-up after cold starts
  • Air trapped in the cooling system after service
  • Cracked or worn plastic housing replacement

Installation Notes

Verify the engine application and housing position before installation, especially on models listed with upper or N/A fitment positions. Replace the seal during service, clean the mating surfaces thoroughly, and bleed the cooling system after installation using the built-in bleeder hole and jiggle pin. No bolts, mounting hardware, or installation tool are included.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and processes, this thermostat housing assembly is built to meet the demands of modern cooling systems. Motorad 637-180 is produced to OEM specifications for consistent temperature control and dependable service life.

Compatible Vehicles

  • Fits 2022-2025 Lexus IS500, N/A
  • Fits 2021-2025 Lexus LC500, N/A
  • Fits 2021-2025 Lexus RC F, N/A
  • Fits 2021-2023 Lexus GX460, N/A
  • Fits 2021-2022 Toyota Sequoia, N/A
  • Fits 2021 Lexus LX570, N/A
  • Fits 2021 Toyota Land Cruiser, N/A
  • Fits 2010-2021 Toyota Tundra, N/A
  • Fits 2020 Lexus GS F, Upper
  • Fits 2010-2020 Lexus GX460, N/A
  • Fits 2020 Lexus LC500, Upper
  • Fits 2020 Lexus LX570, Upper
  • Fits 2020 Lexus RC F, Upper
  • Fits 2020 Toyota Land Cruiser, Upper
  • Fits 2020 Toyota Sequoia, Upper
  • Fits 2016-2019 Lexus GS F, N/A
  • Fits 2018-2019 Lexus LC500, N/A
  • Fits 2013-2019 Lexus LX570, N/A
  • Fits 2008-2011 Lexus LX570, N/A
  • Fits 2015-2019 Lexus RC F, N/A
  • Fits 2013-2019 Toyota Land Cruiser, N/A
  • Fits 2008-2011 Toyota Land Cruiser, N/A
  • Fits 2008-2019 Toyota Sequoia, N/A
  • Fits 2007-2017 Lexus LS460, N/A
  • Fits 2008-2016 Lexus LS600h, N/A
  • Fits 2008-2014 Lexus IS F, N/A
  • Fits 2008-2011 Lexus GS460, N/A
  • Fits 2007-2009 Toyota Tundra, Upper
This part fits 142 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025LexusIS5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2025LexusLC5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2025LexusRC F5.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2024LexusIS5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2024LexusLC5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2024LexusRC F5.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2023LexusGX4604.6LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2023LexusIS5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2023LexusLC5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2023LexusRC F5.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022LexusGX4604.6LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022LexusIS5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022LexusLC5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022LexusRC F5.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2022ToyotaSequoia5.7LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021LexusGX4604.6LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021LexusLC5005.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021LexusLX5705.7LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021LexusRC F5.0LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021ToyotaLand Cruiser5.7LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021ToyotaSequoia5.7LV8N/AIncludes thermostat, housing, and seal; Integrated Housing Thermostat
2021ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020LexusGS F5.0LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020LexusLC5005.0LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020LexusLX5705.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020LexusRC F5.0LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020ToyotaLand Cruiser5.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020ToyotaSequoia5.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2020ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019LexusGS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019LexusLC5005.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019LexusRC F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2019ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018LexusGS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018LexusLC5005.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018LexusRC F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2018ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017LexusGS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017LexusRC F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2017ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusGS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016LexusRC F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2016ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015LexusRC F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2015ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2014ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2013ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaSequoia4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2012ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusGS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaSequoia4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2011ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusGS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusGX4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaSequoia4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaTundra5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2010ToyotaTundra4.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009LexusGS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2009ToyotaTundra5.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008LexusGS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008LexusIS F5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008LexusLS600h5.0LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008LexusLX5705.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaLand Cruiser5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaSequoia5.7LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2008ToyotaTundra5.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007LexusLS4604.6LV8N/A180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
2007ToyotaTundra5.7LV8Upper180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Continental — 49338Dorman - OE Solutions — 902-5136Four Seasons — 56378Four Seasons — 85953Motorad — 637-1801601-31663063780160310S010167110S01096371801603138010HT180-736P63780QRT81