Delphi ES20388 Oxygen Sensor - Rear

Delphi ES20388 Oxygen Sensor Overview

The Delphi ES20388 is a heated oxygen sensor designed specifically for the rear position on Honda Fit models. This sensor plays a critical role in monitoring exhaust gases to optimize engine performance and reduce emissions.

• Heated sensor type for faster response times
• Four-wire design ensuring accurate signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with Honda Fit exhaust systems
• Overall length of 555.0 mm for precise installation
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Features

The Delphi ES20388 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and emissions control. Its four-wire configuration supports both the sensor signal and heater circuit, ensuring reliable data transmission to the vehicle’s engine control unit. The square connector shape is designed to match the factory wiring harness on Honda Fit models, reducing installation complexity. With a thread size of 18 x 1.5 mm and an overall length of 555.0 mm, this sensor fits precisely in the rear exhaust position, maintaining proper sensor placement and function.

Compatible Vehicles and Applications

This oxygen sensor is compatible with Honda Fit vehicles requiring a rear oxygen sensor replacement. The part number ES20388 is specifically engineered to meet the OEM specifications for these models, ensuring proper fit and function.

• Helps resolve issues related to poor fuel economy
• Addresses rough idling caused by incorrect air-fuel mixture
• Reduces increased emissions and failed emissions tests
• Corrects check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and responsiveness

Installation Notes and Tips

When installing the Delphi ES20388 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for guidance on connector alignment and torque specifications. Verify the square connector is fully seated to prevent signal interruptions. It is recommended to use anti-seize compound on the threads to facilitate future removal. Proper installation in the rear position is critical for accurate sensor readings and optimal engine management.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20388 part number undergoes rigorous testing to ensure durability and reliable performance under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in the product’s longevity.