Delphi ES10857 Oxygen Sensor - Rear

Overview of Delphi ES10857 Heated Oxygen Sensor

The Delphi ES10857 is a heated oxygen sensor designed for precise emission control in select BMW and Land Rover models. Featuring a 4-wire configuration and a round connector, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated sensor type for faster response times
• 4-wire design for reliable signal transmission
• Round connector shape for secure fitment
• Thread size of 18 x 1.5 mm compatible with specified vehicles
• Overall length of 990 mm for proper installation
• Includes oxygen sensor and instruction sheet
• Positioned for rear installation

Detailed Product Description

The Delphi ES10857 oxygen sensor is engineered to meet the emission control requirements of various BMW models such as the 318i, 323i, 325i, 328i, 330i, 525i, 528i, 530i, and 750iL, as well as Land Rover vehicles including the Range Rover, X3, X5, and Z series models like Z3 and Z4. This heated sensor uses a 4-wire design that allows for quicker warm-up and more accurate oxygen level detection compared to unheated sensors. The round connector shape and 18 x 1.5 mm thread size ensure compatibility and ease of installation in the rear position of the exhaust system. With an overall length of 990 mm, the sensor fits precisely within the designated mounting points, maintaining proper exhaust flow and sensor function.

Common Applications and Issues Addressed

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

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor replacement to avoid burns
• Use the included instruction sheet for proper installation procedures
• Verify the sensor’s rear position mounting to match the original equipment location
• Apply anti-seize compound on the threads if recommended to facilitate future removal
• Check connector compatibility with the vehicle’s wiring harness before installation

Quality Assurance and Warranty

Delphi manufactures the ES10857 oxygen sensor to meet OEM specifications, ensuring reliable performance and durability. This sensor undergoes rigorous testing to comply with emission standards applicable to BMW and Land Rover vehicles. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor or region.