Delphi ES20138 Oxygen Sensor - Rear

Delphi Heated Oxygen Sensor for Chevrolet Corsica

The Delphi ES20138 oxygen sensor is designed specifically for the rear position on Chevrolet Corsica models. This heated sensor ensures accurate emissions monitoring and optimal engine performance by providing reliable oxygen level readings to the vehicle’s engine control unit.

• Heated oxygen sensor type for faster response times
• 4-wire design for precise signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with rear exhaust ports
• Overall length of 1850 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20138 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving emissions control efficiency on Chevrolet Corsica vehicles. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape matches the factory wiring harness, simplifying replacement. With a thread size of 18 x 1.5 mm and an overall length of 1850 mm, this sensor fits the rear exhaust position precisely, maintaining proper exhaust flow and sensor exposure.

Applications and Problem Solving

This oxygen sensor is compatible with Chevrolet Corsica models requiring a rear heated oxygen sensor. It addresses common issues such as:

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture data
• Increased emissions from inefficient combustion
• Engine performance problems related to sensor failure
• Failed emissions tests caused by sensor malfunction

Installation Notes and Tips

When installing the Delphi ES20138 oxygen sensor, ensure the vehicle is cool to avoid burns. Use anti-seize compound on the threads to prevent seizing but avoid contaminating the sensor tip. Connect the square connector firmly to the factory harness to maintain electrical integrity. Follow the included instruction sheet for torque specifications and wiring details to ensure proper installation.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications for durability and accuracy. The ES20138 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 to support long-term use in Chevrolet Corsica vehicles.