Delphi ES20089 Oxygen Sensor - Rear, Rear Left or Rear Right

Delphi ES20089 Heated Oxygen Sensor Overview

The Delphi ES20089 is a heated oxygen sensor designed for precise emission control in select Dodge and Jeep vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate readings and reliable performance for rear exhaust positions.

• Heated oxygen sensor with 4 wires for efficient operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 450.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: rear, rear left, and rear right exhaust locations

Technical Details and Compatibility

The Delphi ES20089 oxygen sensor is engineered to meet the emission control requirements of Dodge and Jeep models including the Grand Cherokee, Liberty, Ram 1500, Ram 1500 Van, Ram 2500, Ram 2500 Van, Ram 3500, Ram 3500 Van, and Wrangler. Its heated sensor type allows for faster warm-up times, improving fuel efficiency and reducing emissions. The 4-wire design supports both the sensor signal and heater circuit, ensuring consistent sensor operation under various driving conditions. The square connector shape and 18 x 1.5 mm thread size provide a secure and precise fit in the rear exhaust system, specifically for rear left and rear right positions.

Common Applications and Problem Resolution

• Helps maintain optimal air-fuel mixture for efficient engine performance
• Reduces exhaust emissions by providing accurate oxygen level data
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by enabling proper engine management adjustments
• Prevents rough idling and engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Delphi ES20089 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the included instruction sheet for guidance on proper torque specifications and connector engagement. Verify the sensor position matches the rear, rear left, or rear right exhaust location as required by your specific Dodge or Jeep model. It is recommended to inspect the wiring harness and connector for damage before installation to ensure reliable sensor operation.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20089 part number undergoes rigorous testing to ensure accurate sensor readings and long service life. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product reliability.