Calorstat TH6949.82J Engine Coolant Thermostat - Front

Engine Coolant Thermostat for OE-Style Cooling Control

The Calorstat TH6949.82J engine coolant thermostat is a standard replacement thermostat with a 180°F opening temperature and an included gasket seal. It is built for precise coolant flow control in a wide range of Nissan, Kia, and Hyundai applications, including Altima, Sentra, Forte, and Elantra models.

• Standard engine coolant thermostat for cooling system temperature regulation
• Starts to open at 180.0°F / 82°C
• Gasket or seal included for installation
• Seal type: gasket
• Seal material: rubber, paper, and metal
• Sealing flange outside diameter: 2.14
• Fits front and N/A positions depending on application

Fitment and Application Details

Compatible With a broad range of import vehicles, this thermostat is used in cooling systems where stable operating temperature is critical. Fits 2024-2025 Nissan Altima, N/A; Fits 2025 Nissan Kicks, front; Fits 2024-2025 Nissan Sentra, front; Fits 2021-2023 Kia Forte, N/A; Fits 2017-2020 Hyundai Elantra, N/A; and Fits 2018-2023 Nissan Sentra, front. This part cross-references Bosch 15138 for the same application.

The Calorstat TH6949.82J is also listed across additional Nissan, Kia, and Hyundai platforms, including Rogue Sport, Versa, Soul, Sonata, Tucson, Kona, Veloster, and NV200 applications. The 180°F opening point supports factory-style coolant temperature management for vehicles that specify an 82°C thermostat.

What This Thermostat Helps Address

• Engine running too cool or too warm
• Delayed coolant circulation after cold start
• Temperature fluctuation during stop-and-go driving
• Cooling system service on vehicles calling for an 82°C / 180°F thermostat
• Replacement of a worn thermostat seal or gasket

Installation Notes and Tips

Verify the thermostat housing style, sealing flange diameter, and OE temperature specification before installation. Clean the housing mating surfaces thoroughly and inspect the coolant seal area for corrosion or debris. Use the included gasket seal and refill the cooling system with the correct coolant mixture after service. Confirm proper bleed procedure to remove trapped air and restore normal operating temperature.

Quality Assurance

Calorstat TH6949.82J is a standard thermostat built to match OE-style cooling system requirements for listed Nissan, Kia, and Hyundai applications. The included gasket seal and specified 180°F opening temperature support accurate replacement selection for service work on Altima, Sentra, Forte, and related models.