Calorstat TH2105.82J Engine Coolant Thermostat

Engine Coolant Thermostat for GM Applications

Calorstat TH2105.82J is a standard engine coolant thermostat with a 180°F opening temperature for precise coolant flow control. It includes a gasket seal and is built for direct replacement use in a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Saab, Hummer, and Isuzu applications.

• Standard engine coolant thermostat
• Starts to open at 180.0°F / 82°C
• Gasket included for sealing at installation
• Rubber seal material
• Sealing flange outside diameter: 2.12 in.
• Valve outside diameter: 1.22 in.
• Height between flanges: 1.83 in.

Fitment and Application Details

Compatible with a broad range of GM cooling system applications, including Fits 2006-2009 Chevrolet Impala, N/A; Fits 1997-2008 Chevrolet Corvette, N/A; Fits 2000-2006 Chevrolet Suburban 1500, N/A; Fits 2001-2006 GMC Yukon, N/A; and Fits 2002-2006 Cadillac Escalade, N/A. This part cross-references 456180 for the same application.

Use TH2105.82J when replacing a thermostat that opens at 82 C / 180 F in vehicles such as the Chevrolet Silverado 2500, Pontiac Grand Prix, and Buick LaCrosse. The part number TH2105.82J is also listed for additional GM truck, SUV, performance, and passenger car applications across the 1997-2009 model years.

What This Thermostat Helps Address

• Engine running too cool or too warm due to thermostat wear
• Delayed coolant circulation after cold starts
• Temperature fluctuation from a sticking thermostat valve
• Cooling system service on GM vehicles with an 82°C / 180°F thermostat spec
• Replacement of a thermostat with a deteriorated gasket seal

Installation Notes and Tips

Verify the thermostat opening temperature, flange dimensions, and seal style before installation. Clean the housing mating surfaces thoroughly and inspect the cooling system for contamination, damaged hoses, or a warped housing before fitting the new gasket seal. Always refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Calorstat TH2105.82J is specified as a standard thermostat with included gasket sealing and application-matched dimensions for the listed vehicles. Confirm fitment by year, make, model, and cooling system specification before ordering.