Delphi ES20395 Oxygen Sensor - Rear Left

Delphi ES20395 Heated Oxygen Sensor Overview

The Delphi ES20395 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 for reliable signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified models
• Overall length of 1240 mm for correct installation reach
• Positioned for rear left installation
• Includes oxygen sensor and instruction sheet

Technical Details and Compatibility

The Delphi ES20395 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response time and fuel management accuracy. 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 are designed to fit securely in the rear left position of compatible vehicles. This sensor is specifically compatible with Nissan Pathfinder and Infiniti QX4 models, providing a direct replacement that meets factory standards.

Applications and Problem Resolution

This oxygen sensor is used to monitor exhaust oxygen levels, enabling the engine control unit to adjust fuel injection for efficient combustion. It helps address issues such as:

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions failing regulatory standards
• Engine performance problems like rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

When installing the Delphi ES20395 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to avoid damaging the sensor or threads. Verify the sensor is installed in the rear left position as specified. Connect the 4-wire harness securely to the square connector to maintain proper electrical connections. Follow the included instruction sheet for torque specifications and wiring guidance.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet stringent quality standards and OEM specifications. The ES20395 part number undergoes rigorous testing to ensure durability and accurate performance under various operating conditions. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor.