Delphi ES10939 Oxygen Sensor - Front

Overview of Delphi ES10939 Oxygen Sensor

The Delphi ES10939 oxygen sensor is designed for precise emission control in select Jaguar models. Featuring 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 specified Jaguar models
• Overall length of 450.0 mm for correct installation depth
• Includes oxygen sensor and instruction sheet for installation guidance
• Positioned for front placement in the exhaust system

Detailed Product Description

The Delphi ES10939 oxygen sensor is engineered to meet the emission control requirements of Jaguar vehicles including the S-Type, Super V8, Vanden Plas, X-Type, XJ8, XJR, XK8, and XKR. Its 4-wire design allows for heated sensor operation, improving response time and durability under varying engine conditions. The square connector shape ensures a secure electrical connection, reducing the risk of signal loss or corrosion. With a thread size of 18 x 1.5 mm and an overall length of 450.0 mm, this sensor fits precisely in the front position of the exhaust system, providing accurate oxygen level readings to the engine control unit (ECU).

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for efficient combustion
• Reduces harmful emissions by providing accurate feedback to the ECU
• Resolves engine performance issues such as rough idling or hesitation
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by optimizing engine tuning

Installation Notes and Tips

• Ensure the sensor is installed in the front position of the exhaust manifold as specified
• Use the included instruction sheet for torque specifications and wiring guidance
• Verify the square connector is fully seated to avoid electrical issues
• Apply anti-seize compound on the threads if recommended to facilitate future removal
• Disconnect the battery before installation to prevent electrical shorts

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES10939 part number undergoes rigorous testing to ensure compatibility and reliability with Jaguar S-Type, Super V8, Vanden Plas, X-Type, XJ8, XJR, XK8, and XKR models. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to support long-term use.