Four Seasons 37866 Engine Coolant Temperature Sensor

Reliable Engine Coolant Temperature Sensor for Select GM and Isuzu Models

The Four Seasons Coolant Temp Sensor 37866 is designed to provide accurate temperature readings for your vehicle's engine cooling system. Compatible with various Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models, this sensor helps maintain optimal engine performance and prevents overheating.

Key Features of Four Seasons Coolant Temp Sensor 37866

• Connector Gender: Female for secure electrical connection
• Oval connector shape ensuring proper fitment
• Fitting Thread Size: M12-1.25 for precise installation
• Two terminals for reliable signal transmission
• Meets or exceeds OEM specifications for quality assurance
• Engine Coolant Temperature Sensor type designed for accurate temperature monitoring

Detailed Description of the Coolant Temp Sensor

This Four Seasons Coolant Temp Sensor 37866 is part of the Coolant Temp Sensor product line, which focuses on delivering dependable temperature sensing components for engine cooling systems. The sensor features a female oval connector and a fitting thread size of M12-1.25, ensuring compatibility and ease of installation in the specified vehicle models. With two terminals, it provides consistent and accurate temperature data to the engine control unit, helping regulate cooling fan operation and fuel injection timing.

Compatible Vehicles and Common Applications

This sensor is compatible with a range of vehicles including Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab. Specific models include the 9-7x, Ascender, Bravada, Envoy, Envoy XL, Envoy XUV, Rainier, Trailblazer, and Trailblazer EXT. It is designed to replace the original engine coolant temperature sensor and restore proper engine temperature monitoring.

Issues Addressed by the Four Seasons Coolant Temp Sensor 37866

• Engine overheating due to inaccurate temperature readings
• Poor fuel efficiency caused by incorrect coolant temperature data
• Erratic engine performance related to faulty sensor signals
• Check engine light triggered by sensor failure
• Cooling fan malfunction due to improper temperature input

Installation Notes and Tips

• Ensure the engine is cool before removing the old sensor to avoid burns
• Use the correct M12-1.25 thread size to avoid cross-threading
• Verify the female oval connector matches the vehicle wiring harness
• Apply thread sealant if recommended by the vehicle manufacturer
• Test sensor operation after installation to confirm proper function

Quality Assurance and Warranty Information

The Four Seasons Coolant Temp Sensor 37866 meets or exceeds OEM standards, ensuring reliable performance and durability. This sensor undergoes rigorous quality control to maintain consistent accuracy and fitment. Warranty coverage details should be confirmed with the product documentation or manufacturer.