Delphi ES20323 Oxygen Sensor - Rear

Overview of Delphi ES20323 Oxygen Sensor for Toyota Avalon

The Delphi ES20323 oxygen sensor is designed specifically for the rear position on Toyota Avalon models. This heated oxygen sensor features a 4-wire configuration and a square connector shape, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate emissions monitoring
• 4-wire design for enhanced signal stability
• Square connector shape for secure electrical connection
• Thread size of 18 x 1.5 mm for proper installation
• Overall length of 300.0 mm to match factory specifications
• Includes oxygen sensor and instruction sheet

Detailed Product Description

The Delphi ES20323 oxygen sensor is engineered to meet the emission control requirements of Toyota Avalon vehicles. Its heated sensor type allows for quicker activation and more accurate readings of exhaust oxygen levels, which is critical for optimal engine performance and emissions regulation. The 4-wire design supports both the sensor signal and the heating element, improving responsiveness and durability. The square connector shape ensures a secure and correct electrical connection, reducing the risk of sensor failure due to loose contacts. With a thread size of 18 x 1.5 mm and an overall length of 300.0 mm, this sensor is designed to fit precisely in the rear position of the exhaust system, maintaining factory fitment standards.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces emissions by providing accurate oxygen level data to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring correct sensor feedback
• Supports smooth engine performance by monitoring exhaust gases

Installation Notes and Tips

When installing the Delphi ES20323 oxygen sensor on a Toyota Avalon, ensure the vehicle is cool to avoid burns. Use the correct 18 x 1.5 mm thread size socket for removal and installation to prevent damage to the sensor or exhaust components. Verify the square connector is fully seated to maintain proper electrical contact. Follow the included instruction sheet for torque specifications and wiring guidance.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20323 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details are not provided here, Delphi products typically come with a limited warranty covering defects in materials and workmanship.