Delphi ES20218 Oxygen Sensor - Center or Rear

Delphi ES20218 Heated Oxygen Sensor Overview

The Delphi ES20218 oxygen sensor is designed for precise emission control in select Nissan and INFINITI vehicles. This heated sensor ensures accurate air-fuel mixture readings, helping maintain optimal engine performance and emissions compliance.

• Heated oxygen sensor for faster response times
• 4-wire design for reliable signal transmission
• Square connector shape for secure fitment
• Thread size of 18 x 1.5 mm for direct replacement
• Overall length of 365.0 mm to match OEM specifications
• Includes oxygen sensor and instruction sheet
• Positioned for center or rear installation depending on vehicle

Technical Details and Compatibility

The Delphi ES20218 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. Its 4-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 provide a direct fit for Nissan Altima and INFINITI G20 models, matching OEM specifications. The sensor’s overall length of 365.0 mm accommodates proper installation in the center or rear exhaust positions, depending on your vehicle’s specific requirements.

Applications and Problem Resolution

This oxygen sensor is compatible with Nissan Altima and INFINITI G20 vehicles requiring a center or rear position sensor. It is designed to address common issues such as:

• Erratic engine performance due to faulty oxygen readings
• Increased emissions and failed emissions tests
• Poor fuel economy caused by incorrect air-fuel mixture
• Check engine light triggered by sensor malfunction
• Rough idling or hesitation during acceleration

Installation Notes and Tips

When installing the Delphi ES20218 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to avoid damaging the sensor or threads. Verify the sensor position (center or rear) matches your vehicle’s requirements. Follow the included instruction sheet for wiring and connector details. It is recommended to inspect the wiring harness and connector for damage before installation.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The ES20218 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. Refer to the product documentation or supplier for exact warranty terms.