Four Seasons 36445 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for GM Applications

The Four Seasons 36445 coolant temp sensor is a brass engine coolant temperature sensor built with a female round connector, male 3/8" pipe fitting, and 3 terminals. It meets or exceeds OEM requirements and is used in a wide range of GM and select Jeep applications, including Buick Regal, Pontiac Grand Prix, Chevrolet Lumina, and Chevrolet S10 service needs.

Key Features

• Four Seasons Coolant Temp Sensor, part number 36445
• Brass construction for engine cooling system service
• Female round connector with 3 terminals
• Male 3/8" pipe thread fitting (43/64" x 18)
• Meets or exceeds OEM specifications
• Direct replacement style for coolant temperature sensing circuits

Product Details

Four Seasons 36445 is an engine coolant temperature sensor used to report coolant temperature to the vehicle’s control system. Accurate temperature input is important for fuel delivery, idle quality, gauge operation, and cooling fan strategy. This coolant temp sensor is a practical OE-style replacement for vehicles such as the 1996-2002 Buick Regal, 1996-2003 Pontiac Grand Prix, 1996-2001 Chevrolet Lumina, and 1995-1998 Chevrolet S10. The Four Seasons Coolant Temp Sensor line focuses on fitment-specific cooling system service, and this part number 36445 is listed across multiple interchange references for the same application.

This part cross-references A77731 and MT1640 for the same application.

Common Symptoms This Part May Address

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting or rough idle related to temperature input errors
• Cooling fan operation that does not match engine temperature
• Check engine light codes tied to coolant temperature sensor faults
• Fuel mixture issues caused by inaccurate engine temperature data

Installation Notes and Fitment

• Fits 2000-2003 Buick Century, N/A; 3 Blade Term; Coolant Temp Sensor
• Fits 1996-2003 Pontiac Grand Prix, N/A; Coolant Temp Sensor
• Fits 1996-2002 Buick Regal, N/A; Coolant Temp Sensor
• Fits 1996-2001 Chevrolet Lumina, N/A; 3 Blade Term; Coolant Temp Sensor
• Fits 1995-1998 Chevrolet S10, N/A; 3 Blade Term; Coolant Temp Sensor
• Fits 1997 Jeep Grand Cherokee, N/A; Coolant Temp Sensor

Verify connector style, thread size, and terminal count before installation. Clean the mounting port and inspect the harness connector for corrosion or damaged terminals so the new sensor can read coolant temperature accurately.

Quality Assurance

Four Seasons lists this coolant temp sensor as meeting or exceeding OEM requirements, supporting dependable replacement performance for cooling system and engine management service.