Delphi ES10938 Oxygen Sensor - Front

Delphi Oxygen Sensor ES10938 Overview

The Delphi ES10938 oxygen sensor is designed for precise emission control in select Subaru vehicles. Engineered with a 4-wire configuration and a square connector, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• 4-wire oxygen sensor for reliable signal transmission
• Square connector shape for secure and proper fitment
• Thread size of 18 x 1.5 mm compatible with Subaru models
• Overall length of 380.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for front placement in the exhaust system

Technical Details and Compatibility

The Delphi ES10938 oxygen sensor is specifically designed to fit Subaru Impreza, Legacy, and Outback models. Its 18 x 1.5 mm thread size and 380 mm overall length ensure proper fit and function in the front position of the exhaust system. The 4-wire design supports both the sensor’s heating element and signal wires, providing accurate oxygen level readings to the engine control unit (ECU). The square connector shape facilitates a secure electrical connection, reducing the risk of disconnection or signal loss.

Purpose and Common Applications

• Monitors oxygen levels in exhaust gases for emission control
• Helps maintain optimal air-fuel ratio for engine efficiency
• Reduces harmful emissions by providing data to the ECU
• Addresses issues such as rough idling or poor fuel economy
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Delphi ES10938 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 vehicle harness to prevent damage. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Confirm the sensor is installed in the front position of the exhaust system as specified for Subaru Impreza, Legacy, and Outback models.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES10938 part number undergoes rigorous testing to ensure accurate sensor readings and long service life. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects. Refer to the product documentation for exact warranty terms.