Delphi ES20101 Oxygen Sensor - Rear

Overview of Delphi ES20101 Oxygen Sensor for Subaru Vehicles

The Delphi ES20101 is a heated oxygen sensor designed specifically for rear position installation on select Subaru models. Engineered to meet precise fitment requirements, this sensor supports optimal emission control and engine performance for Subaru Forester and Impreza vehicles.

• Heated oxygen sensor type for faster response times
• Four-wire design ensuring accurate signal transmission
• Square connector shape for secure and reliable connection
• Thread size of 18 x 1.5 mm compatible with Subaru exhaust systems
• Overall length of 465.0 mm for proper fitment in rear sensor position
• Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20101 oxygen sensor is engineered to provide precise air-fuel mixture readings by measuring oxygen levels in the exhaust gases. Its heated sensor element allows for quicker activation and improved accuracy during cold starts and varying engine conditions. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape is designed to match Subaru's factory wiring harness, facilitating straightforward installation without modifications. With a thread size of 18 x 1.5 mm and an overall length of 465.0 mm, this sensor fits securely in the rear position of Subaru Forester and Impreza models, maintaining OEM specifications.

Compatible Subaru Models and Applications

• Subaru Forester rear oxygen sensor replacement
• Subaru Impreza rear heated oxygen sensor upgrade
• Emission control sensor for Subaru vehicles requiring 18 x 1.5 mm thread size
• Replacement sensor for rear exhaust position on Subaru Forester and Impreza

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor threads
• Verify connector shape matches the vehicle harness before installation
• Follow the included instruction sheet for proper wiring and torque specifications
• Check for any exhaust leaks after installation to maintain sensor accuracy

Quality Assurance and Warranty Information

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20101 part number undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product longevity and function.