Calorstat TH7255.82J Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing for Toyota and Lexus

Calorstat TH7255.82J is an engine coolant thermostat housing assembly built with a plastic housing, black finish, and an included gasket or seal. It uses a gasket-style seal, has three mounting holes, two outlet ports, and a thermostat start-to-open temperature of 180.0 degrees for applications that require this OE-style cooling system layout.

Compatible With Toyota Corolla, Toyota Prius, Toyota Prius AWD-e, Toyota Prius Prime, Toyota Prius V, Toyota Prius Plug-In, and Lexus CT200h applications listed below. Calorstat TH7255.82J is also cross-referenced to Continental 49348 and Gates 34707 for the same application.

• Plastic thermostat housing assembly with black finish
• Gasket or seal included for the housing interface
• Three mounting holes for direct-fit installation
• Two outlet ports for the specified cooling circuit layout
• 180.0 degree start-to-open temperature
• OE supplier context for Toyota and Lexus applications

Fitment Details

• Fits 2025 Toyota Corolla, N/A
• Fits 2020-2024 Toyota Corolla, N/A
• Fits 2010-2022 Toyota Prius, N/A
• Fits 2019-2022 Toyota Prius AWD-e, N/A
• Fits 2017-2022 Toyota Prius Prime, N/A
• Fits 2012-2018 Toyota Prius V, N/A
• Fits 2011-2017 Lexus CT200h, N/A
• Fits 2012-2015 Toyota Prius Plug-In, N/A

What This Part Helps Address

• Coolant leaks at the thermostat housing interface
• Cracked or heat-aged plastic housing damage
• Improper thermostat opening behavior in the cooling system
• Coolant flow issues related to a worn housing or seal
• Service replacement for OE-style Toyota Corolla and Prius cooling layouts

Installation Notes

Verify the engine cooling system configuration, mounting hole pattern, outlet port count, and thermostat opening temperature before installation. Replace the housing only on the applications listed above, and inspect the mating surfaces for corrosion, residue, or distortion so the gasket can seat correctly. Confirm coolant level and bleed air from the system after service.

Quality Assurance

Calorstat TH7255.82J is listed with OE supplier context for Toyota and Lexus applications, which supports fitment confidence for the specified Corolla, Prius, and CT200h vehicles. Confirm the part number TH7255.82J against the vehicle application before ordering.