Delphi ES20122 Oxygen Sensor - Front, Front Left or Rear

Delphi ES20122 Heated Oxygen Sensor Overview

The Delphi ES20122 is a heated oxygen sensor designed for precise emission control in select Mazda vehicles. Engineered to meet OEM specifications, this sensor supports efficient fuel management and reduced emissions for models like the Mazda 626, Miata, MPV, and Protege.

• Heated oxygen sensor with 4-wire design for accurate readings
• Square connector shape ensuring secure electrical connection
• Thread size of 18 x 1.5 mm compatible with specified Mazda models
• Overall length of 465.0 mm for proper fitment
• Includes oxygen sensor and instruction sheet for installation guidance
• Position-specific fitment: front, front left, or rear depending on vehicle requirements

Technical Details and Compatibility

The Delphi ES20122 oxygen sensor features a heated sensor type that allows for faster activation and improved performance in emission control systems. Its 4-wire configuration supports both sensor heating and signal transmission, which is critical for accurate air-fuel ratio monitoring. The square connector shape ensures a reliable electrical connection, reducing the risk of sensor failure due to loose contacts. With a thread size of 18 x 1.5 mm and an overall length of 465.0 mm, this sensor is designed to fit specific positions such as front, front left, or rear on compatible Mazda vehicles including the 626, Miata, MPV, and Protege. The package includes the oxygen sensor and an instruction sheet to assist with proper installation.

Applications and Problem Resolution

• Helps maintain optimal air-fuel mixture for efficient engine performance
• Reduces harmful emissions by providing accurate oxygen level data to the ECU
• Addresses issues such as rough idling caused by faulty oxygen sensors
• Prevents check engine light triggers related to emission control faults
• Improves fuel economy by enabling precise fuel injection adjustments

Installation Notes and Tips

When installing the Delphi ES20122 oxygen sensor, ensure the vehicle is compatible with the specified fitment positions (front, front left, or rear). Use the included instruction sheet for guidance on torque specifications and connector engagement. It is recommended to disconnect the battery before installation to avoid electrical shorts. Verify the sensor’s thread size of 18 x 1.5 mm matches the vehicle’s exhaust port. Proper installation will ensure accurate sensor readings and optimal emission control system performance.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The ES20122 part number undergoes rigorous testing to ensure durability and reliable operation under various driving conditions. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product longevity and performance.