Calorstat TH7317.82J Engine Coolant Thermostat

Engine Coolant Thermostat for Lexus and Toyota

Calorstat TH7317.82J is an engine coolant thermostat with a plastic housing, black finish, and integrated gasket seal. It opens at 180.0 degrees to help regulate coolant flow and maintain stable operating temperature in a wide range of Lexus and Toyota V8 applications.

• Plastic housing construction with black finish
• 180.0 degree start-to-open temperature
• Gasket included with rubber seal material
• 3-bolt hole housing design
• Height between flanges: 1.59
• OE supplier lineage for Lexus and Toyota applications

Application Details

This thermostat is used in cooling system service where precise coolant temperature control is required. It cross-references Gates 34705 for the same application. TH7317.82J is listed for vehicles including Lexus IS500, LC500, RC F, GX460, LX570, GS F, LS460, LS600h, IS F, GS460, and Toyota Sequoia, Land Cruiser, and Tundra. For fitment-specific searches, this part is commonly referenced as a Lexus GX460 thermostat housing or Toyota Tundra engine coolant thermostat.

What It Helps Address

• Coolant temperature that stays too low or takes too long to reach operating range
• Temperature fluctuation caused by a worn thermostat assembly
• Coolant seepage at the thermostat housing seal
• Cooling system service on Lexus and Toyota engines with the matching housing design
• Replacement needs for OE-style thermostat housing applications

Installation Notes and Tips

Confirm the housing style, bolt-hole count, and seal type before installation. Clean the mating surfaces thoroughly and inspect the cooling system for contamination or damaged sealing faces. Verify the 180.0 degree opening specification and application match before service. Fits 2025 Lexus IS500, N/A; Fits 2025 Lexus LC500, N/A; Fits 2025 Lexus RC F, N/A; Fits 2022-2024 Lexus IS500, N/A; Fits 2018-2024 Lexus LC500, N/A; Fits 2015-2024 Lexus RC F, N/A; Fits 2010-2023 Lexus GX460, N/A; Fits 2008-2022 Toyota Sequoia, N/A; Fits 2013-2021 Lexus LX570, N/A; Fits 2008-2011 Lexus LX570, N/A; Fits 2013-2021 Toyota Land Cruiser, N/A; Fits 2008-2011 Toyota Land Cruiser, N/A; Fits 2007-2021 Toyota Tundra, N/A; Fits 2016-2020 Lexus GS F, 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.

Quality Assurance

Calorstat is listed as an OE supplier to Lexus and Toyota for these applications, supporting direct-fit service expectations for the specified vehicles. Part number TH7317.82J is also referenced in aftermarket interchange listings for application matching.