Delphi ES20384 Oxygen Sensor - Rear

Delphi ES20384 Heated Oxygen Sensor Overview

The Delphi ES20384 is a heated oxygen sensor designed for rear position installation on select Chevrolet and Pontiac models. This sensor helps maintain optimal engine performance and emissions control by accurately monitoring oxygen levels in the exhaust system.

• Heated sensor type for faster response times
• Four-wire design ensuring reliable signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 1265 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Description of the Delphi ES20384 Oxygen Sensor

The Delphi ES20384 oxygen sensor is engineered to provide precise air-fuel mixture readings by measuring oxygen content in the exhaust gases. Its heated element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size are designed to match the rear oxygen sensor port on Chevrolet Cavalier and Pontiac Sunfire models, making it a direct replacement part. With an overall length of 1265 mm, this sensor fits securely without modification.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the following vehicles:

• Chevrolet Cavalier (rear oxygen sensor)
• Pontiac Sunfire (rear oxygen sensor)

Use the Delphi ES20384 sensor to address issues related to exhaust emissions and engine performance in these specific models.

Common Issues Addressed by the Delphi ES20384 Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased exhaust emissions failing emissions tests
• Engine hesitation or rough idling caused by sensor malfunction
• Failed rear oxygen sensor diagnostics

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor removal to avoid burns
• Use the correct 18 x 1.5 mm thread size socket for installation
• Do not over-tighten the sensor to prevent thread damage
• Verify the square connector is fully seated and locked
• Follow the included instruction sheet for proper wiring and installation procedures

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM specifications for durability and performance. The ES20384 part number undergoes rigorous testing to ensure reliable operation under normal driving conditions. Warranty coverage details should be confirmed with the point of purchase or Delphi directly.