Delphi ES20117 Oxygen Sensor - Front, Front Right or Rear

Delphi ES20117 Heated Oxygen Sensor Overview

The Delphi ES20117 is a heated oxygen sensor designed for precise emission control in select GM and other vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for fast response
• Square connector shape for secure and reliable connection
• Thread size of 18 x 1.5 mm for direct fitment
• Overall length of 430 mm to suit various mounting positions
• Includes oxygen sensor and instruction sheet for installation guidance
• Compatible with front, front right, and rear positions depending on vehicle

Technical Details and Compatibility

The Delphi ES20117 oxygen sensor features a heated design that accelerates sensor warm-up time, improving emission control efficiency shortly after engine start. Its 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent operation under varying conditions. The square connector shape provides a secure fit to the vehicle’s wiring harness, minimizing connection issues. With a thread size of 18 x 1.5 mm and an overall length of 430 mm, this sensor fits specific positions such as front, front right, or rear, depending on the vehicle model.

This sensor is compatible with a range of vehicles including Cadillac Escalade, Chevrolet Silverado 1500, GMC Sierra 1500, Hummer H2, Isuzu Ascender, Oldsmobile Bravada, Pontiac Torrent, and Suzuki XL-7 among others. The Delphi ES20117 is designed to meet the emission control requirements of these models, ensuring proper engine management and reduced emissions.

Common Applications and Problem Resolution

• Helps correct inaccurate air-fuel mixture readings
• Resolves engine performance issues related to faulty oxygen sensors
• Reduces excessive emissions and improves fuel efficiency
• Addresses check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter function by providing accurate data

Installation Notes and Tips

When installing the Delphi ES20117 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct thread size (18 x 1.5 mm) to avoid cross-threading. Verify the sensor position (front, front right, or rear) matches the vehicle’s requirements. Connect the square-shaped connector securely to the wiring harness to prevent electrical issues. Follow the included instruction sheet for torque specifications and wiring details.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20117 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to support long-term use in compatible Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and Suzuki vehicles.