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Motorad 1040-180 Engine Coolant Thermostat Housing Assembly
| Brand | Motorad 1040-180 |
|---|---|
| Flange Thickness | 0.4 |
| Bleeder Hole | No |
| Bolt Hole Quantity | 3 |
| 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 |
| Mounting Hardware Included | No |
| Number Of Bolt Holes | 3 |
| Number Of Outlet Ports | 3 |
| Number Of Seals | 1 |
| Opening Temperature | 188 |
| Outlet Diameter | 1.52 in, 0.66 in, 0.39 in |
| Start to Open Temperature | 188 deg. f |
| Temperature | 188 deg. f |
| Temperature (Degree) | 188 |
| Product line | Integrated Housing Thermostat |
| Fits | Lexus and Toyota · 17 vehicles |
OE-supplier quality. Built with OEM materials and manufacturing standards for cooling system service.
Integrated housing design. Combines the thermostat and housing in one service assembly.
188°F response. Supports precise coolant temperature control with a quick-reacting wax element.
Cross-references CSF 10408, Dorman - OE Solutions 902-5212 and Eastern Catalytic 50548 for the same application. See all 9.
Integrated thermostat housing assembly
Motorad 1040-180 is an engine coolant thermostat housing assembly built with OEM-quality materials and OE-supplier manufacturing standards. It uses a 188°F thermostat response and an integrated housing design to support precise coolant temperature control in demanding cooling systems.
Compatible With Lexus RX450h, Lexus RX450hL, Lexus TX550h+, and Toyota Highlander applications, this Motorad thermostat housing assembly is built to match OE specifications and processes. The plastic housing, rubber seal, and three-bolt design provide a direct-fit service part for cooling system repairs where temperature regulation and sealing integrity matter.
Key features
- Motorad 1040-180 integrated housing thermostat design
- 188°F opening temperature for controlled coolant flow
- Plastic housing with rubber gasket/seal
- Three bolt holes and three outlet ports
- OE-supplier manufacturing with OEM specifications and processes
Detailed description
This thermostat housing assembly is engineered for cooling system service where accurate temperature response is critical. The copper case and wax compound inside the thermostat provide quick reaction to coolant temperature changes, while the integrated housing format simplifies replacement of the thermostat and housing as a matched assembly. Motorad 1040-180 is a practical OE-style solution for Lexus RX450h, Lexus RX450hL, Lexus TX550h+, and Toyota Highlander cooling system maintenance.
This part cross-references Dorman - OE Solutions 902-5212 and Wix 51040 for the same application.
What it is used for
- Restoring proper engine coolant temperature regulation
- Replacing a cracked or worn thermostat housing
- Addressing coolant leaks at the housing seal
- Correcting slow thermostat response or temperature instability
- Servicing OE-style cooling system components on Lexus and Toyota applications
Installation notes and tips
Verify the 188°F temperature specification and outlet port layout before installation. Inspect the sealing surface and replace any damaged mating components during service. Confirm fitment against the vehicle application and cooling system configuration listed for your Lexus RX450h, Lexus RX450hL, Lexus TX550h+, or Toyota Highlander.
Quality assurance
Manufactured by an OE supplier using OEM-quality materials, OEM specifications, and production processes. The thermostat uses a copper case and wax compound for responsive temperature control in demanding automotive cooling systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Notes |
|---|---|---|---|---|---|---|
| 2025 | Lexus | TX550h+ | 3.5L | V6 | — | Includes thermostat, housing, and seal; Integrated Housing Thermostat |
| 2024 | Lexus | TX550h+ | 3.5L | V6 | — | Includes thermostat, housing, and seal; Integrated Housing Thermostat |
| 2022 | Lexus | RX450h | 3.5L | V6 | — | Includes thermostat, housing, and seal; Integrated Housing Thermostat |
| 2022 | Lexus | RX450hL | 3.5L | V6 | — | Includes thermostat, housing, and seal; Integrated Housing Thermostat |
| 2021 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2021 | Lexus | RX450hL | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2020 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2020 | Lexus | RX450hL | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2019 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2019 | Lexus | RX450hL | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2019 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2018 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2018 | Lexus | RX450hL | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2018 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2017 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2017 | Toyota | Highlander | 3.5L | V6 | ELECTRIC/GAS | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
| 2016 | Lexus | RX450h | 3.5L | V6 | — | 180F temperature thermostat housing assembly with seal and OE specifications.; Integrated Housing Thermostat |
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