The thermostat housing is located in the engine between the engine and the radiator. When the engine cools off below the operating temperature, the thermostat housing is closed.
The common symptoms of a thermostat housing leak are a stuck thermostat valve, an illuminated low coolant warning light, and the P0128 or P0126 code.
If the thermostat housing is broken or leaking fluid, it needs to be replaced as soon as you can.

Compatible with Toyota 1.8L Vehicles:
2020-2022 Corolla
2010-2022 Prius
2019-2022 Prius AWD-e
2012-2015 Prius Plug-In
2017-2022 Prius Prime
2012-2018 Prius V

Compatible with Lexus 1.8L Vehicles:
2011-2017 CT200h

Replaces Part #: THT-017, ‎THT017, 902-5138 Engine Coolant Thermostat Housing Assembly.

NOTE: This is NOT a genuine part, it's a aftermarket replacement part manufactured by Allmotorparts.

NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.