Delphi ES20097 Oxygen Sensor - Rear Left

Delphi ES20097 Heated Oxygen Sensor Overview

The Delphi ES20097 is a heated oxygen sensor designed for precise emission control in select Chevrolet and GMC heavy-duty trucks. 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 accurate readings
• 4-wire design with a triangle-shaped connector for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicle models
• Overall length of 550 mm for proper installation in rear left position
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20097 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response time and emission control efficiency. Its 4-wire configuration supports both sensor signal and heater circuit, ensuring reliable operation. The triangle-shaped connector and 18 x 1.5 mm thread size provide a secure and precise fit in the rear left position of compatible vehicles. This sensor is specifically designed for use in Chevrolet Avalanche 2500, GMC Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, Silverado 3500, Suburban 2500, and Yukon XL 2500 models.

Common Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Addresses poor fuel economy linked to sensor malfunction
• Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Delphi ES20097 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for proper torque specifications and connector alignment. Verify the sensor is installed in the rear left position as specified. It is recommended to inspect wiring and connectors for damage before installation to ensure optimal sensor performance.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM requirements. The ES20097 part number undergoes rigorous testing to ensure durability and accurate sensor output. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in product reliability.