Delphi ES20370 Oxygen Sensor - Rear Right

Delphi ES20370 Heated Oxygen Sensor Overview

The Delphi ES20370 is a heated oxygen sensor designed for precise emission control in select Nissan and Infiniti 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
• 4-wire design with a square connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with rear right position
• Overall length of 1035.0 mm for proper installation reach
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20370 oxygen sensor features a heated element that allows it to reach operating temperature quickly, providing reliable oxygen level readings in the exhaust stream. Its 4-wire configuration supports both sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size are designed specifically for the rear right position on Nissan Maxima and Infiniti I35 models. With an overall length of 1035.0 mm, this sensor fits precisely without modification.

Compatible Vehicles

This oxygen sensor is compatible with the following vehicles:

• Nissan Maxima (rear right position)
• Infiniti I35 (rear right position)

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces emissions by providing accurate feedback to the engine control unit
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or threads
• Apply anti-seize compound on threads if recommended by the manufacturer
• Verify the sensor is installed in the rear right exhaust position
• Follow the included instruction sheet for proper wiring and connection

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20370 part number undergoes rigorous testing to ensure durability and reliable performance in emission control systems. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.