Delphi ES20098 Oxygen Sensor - Rear

Delphi ES20098 Heated Oxygen Sensor Overview

The Delphi ES20098 is a heated oxygen sensor designed for precise emission control in select Chevrolet and Pontiac vehicles. Engineered to meet OEM specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance and reduced emissions.

• Heated sensor type for faster warm-up and improved efficiency
• Four-wire design for reliable 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 1425.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for rear exhaust placement

Detailed Product Description

The Delphi ES20098 oxygen sensor is a heated sensor featuring a four-wire configuration that supports both the sensor signal and heater circuit. This design allows the sensor to reach operating temperature quickly, providing accurate oxygen level readings sooner after engine start. The square connector shape ensures a secure electrical connection, minimizing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm, this sensor is engineered to fit the rear exhaust port of compatible vehicles precisely. The overall length of 1425.0 mm accommodates proper sensor placement within the exhaust system, ensuring reliable data transmission to the engine control unit.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the Chevrolet Cavalier and Pontiac Sunfire models, specifically designed for rear exhaust sensor positions. The part number ES20098 corresponds directly to these applications, making it a suitable replacement for maintaining emission control system integrity in these vehicles.

Common Issues Addressed by the Delphi ES20098 Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the Delphi ES20098 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18 x 1.5 mm thread to prevent damage. Verify the square connector is fully seated and locked to maintain electrical integrity. Follow the included instruction sheet for torque specifications and wiring guidance. It is recommended to inspect the exhaust port for debris or corrosion before installation to ensure a proper seal.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20098 part undergoes rigorous testing to ensure durability and accurate performance under various operating conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to support long-term reliability.