Delphi ES20140 Oxygen Sensor - Rear

Delphi ES20140 Heated Oxygen Sensor Overview

The Delphi ES20140 is a heated oxygen sensor designed for precise emission control in select Saturn vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate readings and reliable performance for rear exhaust monitoring.

• Heated oxygen sensor with 4 wires for efficient operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified Saturn models
• Overall length of 680.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for rear exhaust placement

Technical Details and Compatibility

The Delphi ES20140 oxygen sensor is specifically designed for rear exhaust applications on Saturn SC1, SC2, SL, SL1, SL2, SW1, and SW2 models. Its heated sensor type allows for faster warm-up times, improving emission control efficiency. The 4-wire design supports both sensor heating and signal transmission, while the square connector ensures a secure electrical connection. The 18 x 1.5 mm thread size matches factory specifications, and the 680 mm overall length accommodates proper sensor placement in the exhaust system.

Common Applications and Problem Resolution

• Helps maintain optimal air-fuel mixture for improved fuel efficiency
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers related to rear oxygen sensor faults
• Supports proper operation of the vehicle’s emission control system

Installation Notes and Tips

When installing the Delphi ES20140 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the included instruction sheet for guidance on torque specifications and connector engagement. Verify the sensor’s thread size and connector shape match the vehicle’s exhaust system. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Proper installation in the rear position is critical for accurate sensor readings.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20140 part number undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. Consult product documentation for exact warranty terms.