Delphi ES20381 Oxygen Sensor - Rear

Reliable Heated Oxygen Sensor for Acura and Honda Vehicles

The Delphi ES20381 oxygen sensor is designed to provide accurate emissions monitoring for select Acura and Honda models. Featuring a heated sensor element and a four-wire design, this rear-position oxygen sensor helps maintain optimal engine performance and emissions control.

• Heated oxygen sensor for faster warm-up and accurate readings
• Four-wire configuration for reliable signal and heater circuit
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm for direct replacement
• Overall length of 255.0 mm to match factory specifications
• Includes oxygen sensor and instruction sheet for installation guidance

Product Details and Specifications

The Delphi ES20381 oxygen sensor is engineered to meet or exceed OEM standards for emission control sensors. Its heated sensor type allows the unit to reach operating temperature quickly, improving fuel efficiency and reducing emissions during cold starts. The four-wire design includes two wires for the sensor signal and two for the heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size provide a precise fit for rear-position applications on compatible vehicles. With an overall length of 255.0 mm, this sensor is designed to fit seamlessly into the exhaust system without modification.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the rear position on Acura and Honda models, specifically the Accord and TSX. It is intended for use in emission control systems to monitor oxygen levels in the exhaust gases, enabling the engine control unit to adjust air-fuel mixture for optimal combustion.

• Helps resolve issues related to poor fuel economy
• Addresses rough idling caused by incorrect air-fuel ratios
• Reduces emissions by providing accurate oxygen level data
• Prevents check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and responsiveness

Installation Notes and Tips

When installing the Delphi ES20381 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct socket size for the 18 x 1.5 mm thread to prevent damage. Verify the square connector aligns properly with the vehicle’s wiring harness to ensure a secure connection. Follow the included instruction sheet for detailed installation guidance and torque specifications.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Delphi products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or Delphi’s official documentation for exact warranty terms.