Delphi ES20387 Oxygen Sensor - Center

Delphi ES20387 Oxygen Sensor Overview

The Delphi ES20387 is a heated oxygen sensor designed specifically for the Mazda MPV. Engineered to provide accurate air-fuel mixture readings, this sensor helps maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• 4-wire configuration ensuring reliable signal transmission
• Square connector shape for secure and precise fitment
• Thread size of 18 x 1.5 mm compatible with Mazda MPV exhaust systems
• Overall length of 365.0 mm for proper installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for center placement in the exhaust system

Technical Details and Compatibility

The Delphi ES20387 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. Its 4-wire setup supports both the sensor signal and heater circuit, ensuring consistent performance. The square connector shape matches the factory wiring harness on the Mazda MPV, simplifying installation without modifications. With a thread size of 18 x 1.5 mm and an overall length of 365.0 mm, this sensor fits precisely in the center position of the exhaust system, maintaining OEM specifications.

Applications and Problem Resolution

This oxygen sensor is compatible with Mazda MPV models requiring a center-position heated oxygen sensor. It is designed to address common issues such as:

• Erratic engine idling or rough running due to faulty oxygen readings
• Increased emissions or failed emissions tests
• Poor fuel economy caused by incorrect air-fuel mixture data
• Check Engine Light (CEL) triggered by oxygen sensor faults
• Delayed sensor response affecting engine performance

Installation Notes and Tips

When installing the Delphi ES20387 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the included instruction sheet for proper torque specifications and wiring connections. Verify the square connector aligns correctly with the Mazda MPV harness to prevent electrical issues. It is recommended to inspect the exhaust threads and clean them before installation to ensure a secure fit and prevent leaks.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The ES20387 part number undergoes rigorous testing to ensure compatibility and function with Mazda MPV vehicles. Warranty coverage details should be confirmed with the point of purchase or Delphi directly, as coverage may vary.