Delphi ES20210 Oxygen Sensor - Rear or Rear Left

Delphi ES20210 Heated Oxygen Sensor Overview

The Delphi ES20210 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 air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor with 4 wires for reliable operation
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 320.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for rear or rear left placement depending on vehicle model

Technical Details and Compatibility

The Delphi ES20210 oxygen sensor is specifically designed to fit Dodge Dakota, Durango, Ram 1500, and Jeep Liberty and Wrangler models. Its heated sensor type allows for faster warm-up times, improving emission control efficiency shortly after engine start. The 4-wire design supports both sensor heating and signal transmission, while the square connector ensures a secure electrical connection. The 18 x 1.5 mm thread size matches factory specifications, and the 320 mm overall length accommodates proper sensor placement in the exhaust system. This sensor is intended for rear or rear left positions; always verify the exact location for your vehicle before installation.

Common Applications and Problem Resolution

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces emissions by providing accurate oxygen level data to the engine control unit
• Addresses issues such as rough idling or poor fuel economy caused by faulty sensors
• Prevents check engine light triggers related to oxygen sensor faults
• Supports compliance with emission regulations by ensuring sensor functionality

Installation Notes and Tips

Before installation, confirm the sensor position on your specific Dodge or Jeep model to ensure compatibility. Use appropriate tools to avoid damaging the sensor or threads during removal and installation. The included instruction sheet provides guidance on proper torque specifications and connector engagement. It is recommended to inspect the wiring harness and connector for corrosion or damage prior to installation to ensure reliable sensor operation.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES20210 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. Refer to the product documentation or supplier for exact warranty terms.