Delphi ES20393 Oxygen Sensor - Rear

Delphi ES20393 Heated Oxygen Sensor Overview

The Delphi ES20393 is a heated oxygen sensor designed for precise emission control in select Kia and Mazda vehicles. Engineered to meet OEM specifications, this sensor ensures accurate air-fuel mixture readings for optimal engine performance and reduced emissions.

• Heated sensor type for faster warm-up and improved efficiency
• 4-wire design for reliable signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with specified models
• Overall length of 385.0 mm for correct installation depth
• Positioned for rear placement in the exhaust system
• Includes oxygen sensor and instruction sheet for installation guidance

Technical Details and Compatibility

The Delphi ES20393 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response time and reducing emissions during cold starts. Its 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape and 18 x 1.5 mm thread size provide a secure and precise fit for rear exhaust positions on Kia Protege and Mazda Sephia models. With an overall length of 385.0 mm, this sensor is designed to fit OEM specifications, facilitating straightforward replacement without modification.

Compatible Vehicles

This oxygen sensor is compatible with the following vehicles:

• Kia Protege (rear oxygen sensor)
• Mazda Sephia (rear oxygen sensor)

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces exhaust emissions by providing accurate feedback to the engine control unit
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

When installing the Delphi ES20393 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for proper wiring and torque specifications. Verify the square connector aligns correctly with the vehicle harness to prevent connection issues. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Confirm the sensor is installed in the rear exhaust position as specified for Kia Protege and Mazda Sephia models.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM requirements. The ES20393 part number undergoes rigorous testing to ensure durability and accurate sensor readings. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship. Refer to the product documentation for exact warranty terms.