Aisin THT-024 Engine Coolant Thermostat Housing Assembly

Aisin THT-024 Thermostat Housing Assembly

The Aisin THT-024 engine coolant thermostat housing assembly is an OE-style replacement for select Toyota and Lexus applications. Built to match original temperature control requirements, it supports stable coolant flow and proper engine warm-up in vehicles such as the Toyota Camry, Lexus RX350, and Toyota Highlander.

Key Features

• Engine coolant thermostat housing assembly for cooling system service
• OE engineered and manufactured for exact replacement fitment
• Designed to maintain the original 87°C thermostat temperature specification
• Direct replacement for select Toyota and Lexus models
• Cross-references Beck/Arnley 143-0975 and Dorman OE Solutions 902-5216

Product Details

Aisin THT-024 is part of Aisin’s Original Equipment Manufacturer product line, which focuses on replacement components built to original specifications for fit and temperature control. This thermostat housing assembly is used in cooling system repairs where the thermostat housing must match factory dimensions and operating temperature. It is a direct-fit option for applications including 2018-2024 Toyota Camry, 2016-2022 Lexus RX350, and 2020-2022 Toyota Highlander. The part number THT-024 is also referenced in aftermarket catalogs for the same application.

What This Part Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Coolant temperature regulation concerns tied to a worn thermostat housing
• Leaks or seepage at the thermostat housing assembly
• Cooling system service on Toyota and Lexus vehicles with OE-style fitment
• Replacement needs for vehicles requiring an 87°C thermostat specification

Installation Notes

Verify engine code, cooling system configuration, and OE part match before installation. Inspect the mating surfaces, coolant passages, and related seals or gaskets during service. Proper coolant refill and bleeding are important after thermostat housing replacement to help prevent air pockets and temperature fluctuations. Confirm fitment for your exact year, make, and model before ordering.

Quality Assurance

Aisin’s Original Equipment Manufacturer line is engineered and manufactured to match original replacement requirements and factory temperature specifications. This part number, THT-024, is listed for select Toyota and Lexus vehicles with confirmed OE-style application data.

Compatible Vehicles

• Fits 2019-2025 Lexus ES350, N/A
• Fits 2018-2024 Toyota Camry, N/A
• Fits 2016-2022 Lexus RX350, N/A
• Fits 2018-2022 Lexus RX350L, N/A
• Fits 2019-2022 Toyota Avalon, N/A
• Fits 2020-2022 Toyota Highlander, N/A
• Fits 2017-2020 Toyota Sienna, N/A