Delphi ES20201 Oxygen Sensor - Rear or Rear Left

Delphi ES20201 Heated Oxygen Sensor Overview

The Delphi ES20201 is a heated oxygen sensor designed for precise emission control in select Dodge vehicles. Engineered with a 4-wire configuration and a square connector shape, this sensor ensures accurate readings and reliable performance for Dodge Dakota, Durango, and Ram 1500 models.

• 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 Dodge models
• Overall length of 465.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Designed for rear left and rear right positions, depending on vehicle specifications

Technical Details and Compatibility

The Delphi ES20201 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent performance under various driving conditions. The square connector shape and 18 x 1.5 mm thread size provide a secure fit for Dodge Dakota, Durango, and Ram 1500 models. With an overall length of 465.0 mm, this sensor fits precisely in the rear left or rear right positions as required by your vehicle's emission system.

Common Applications and Problem Resolution

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensor readings
• Prevents increased emissions and failed emissions tests
• Addresses poor fuel economy linked to sensor malfunction
• Eliminates rough idling or hesitation due to incorrect oxygen sensor data

Installation Notes and Tips

Before installation, verify the sensor position (rear left or rear right) specific to your Dodge vehicle. Use the included instruction sheet for proper torque specifications and connector alignment. Ensure the thread size of 18 x 1.5 mm matches the mounting port. It is recommended to disconnect the battery before sensor replacement to avoid electrical issues. Properly secure the square connector to prevent wiring damage or sensor malfunction.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and accuracy. The ES20201 part number undergoes rigorous testing to ensure reliable emission control performance. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to support long-term use in Dodge Dakota, Durango, and Ram 1500 vehicles.