Calorstat TH6311.82J Engine Coolant Thermostat

Engine Coolant Thermostat for Toyota and Lexus

Calorstat TH6311.82J 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 service on a wide range of Toyota, Lexus, and Scion applications.

Key Features

• Standard engine coolant thermostat design
• Starts to open at 180°F for OE-style temperature regulation
• Gasket included for sealing at installation
• Rubber seal material for dependable housing contact
• Sealing flange outside diameter: 2.2 in.
• Height between flanges: 1.37 in.
• Cross-references Gates 33798 and Wix 46308 for the same application

Detailed Description

Calorstat TH6311.82J is an engine coolant thermostat designed to regulate coolant circulation once the engine reaches operating temperature. With a 180°F start-to-open rating, it supports stable temperature control in vehicles such as the Toyota Tacoma, Toyota 4Runner, Toyota Prius, Toyota Yaris, Lexus GS300, Lexus IS300, and Scion xA/xB applications listed in the fitment data. The included gasket seal helps provide a proper seal at the thermostat housing during replacement service. Calorstat TH6311.82J is a practical OE-style choice for drivers servicing cooling system components on Toyota Tacoma and Lexus GS300 platforms.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat
• Coolant flow control issues in the thermostat housing
• Coolant seepage at the thermostat sealing surface
• Cooling system service on Toyota, Lexus, and Scion vehicles with 180°F thermostat specs

Installation Notes and Tips

Verify the thermostat housing dimensions and opening temperature before installation. Clean the sealing surface thoroughly and replace the thermostat with the gasket supplied in the package. Follow the vehicle service procedure for coolant refill and air bleeding after installation. Confirm fitment for your exact year and model, especially on Toyota Tacoma, Toyota 4Runner, and Lexus GS300 applications.

Quality Assurance

Calorstat is listed as an OE supplier to Toyota and Lexus for several of the covered applications, supporting confidence in fit and temperature specification alignment. This part is identified as a direct replacement thermostat for the vehicles shown in the fitment data.