Delphi ES20391 Oxygen Sensor - Rear

Delphi Heated Oxygen Sensor for Acura RL and TL

The Delphi ES20391 oxygen sensor is designed to provide accurate emissions control for Acura RL and TL models. This heated sensor ensures optimal performance by maintaining proper operating temperature quickly, contributing to efficient fuel management and reduced emissions.

Key Features of Delphi ES20391 Oxygen Sensor

• Heated sensor type for faster activation and improved accuracy
• 4-wire design for reliable electrical connections
• Square connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified Acura models
• Overall length of 720 mm for proper installation
• Positioned for rear placement in the exhaust system
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20391 oxygen sensor is engineered to meet the specific requirements of Acura RL and TL vehicles. Featuring a heated sensor element, it quickly reaches the necessary temperature to provide accurate oxygen level readings. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. Its square connector shape and 18 x 1.5 mm thread size allow for a secure and precise fit in the rear exhaust position. With an overall length of 720 mm, this sensor is designed to fit seamlessly within the exhaust system layout of the compatible Acura models.

Common Applications and Issues Addressed

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

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or threads
• Verify the sensor position as rear to match the ES20391 specifications
• Follow the included instruction sheet for proper wiring and connector engagement
• Check for exhaust leaks after installation to ensure sensor accuracy

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20391 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 to support long-term use in Acura RL and TL vehicles.