Delphi ES10581 Oxygen Sensor - Front or Front Left

Delphi ES10581 Oxygen Sensor for BMW and Mercedes-Benz

The Delphi ES10581 is a heated oxygen sensor built for precise exhaust feedback in select BMW and Mercedes-Benz applications. It combines OE-based engineering with a direct-fit design for front and front-left positions on listed vehicles.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire design with round connector shape
• Thread size: 18 x 1.5 mm
• Overall length: 820.0
• Package includes oxygen sensor and instruction sheet
• Front and front-left position coverage for listed applications

OE-Based Design and Fitment

Delphi draws on more than 100 years of OE experience and supplier knowledge used by major automakers, and that background is reflected in the ES10581 oxygen sensor. This part number ES10581 is a direct replacement for select front oxygen sensor applications on 2001-2006 BMW M3, 2001-2002 BMW Z3, and several Mercedes-Benz models including SL500, C280, C43 AMG, CLK320, and CLK430 in the listed front-left positions. This part cross-references Bosch (e.g., 13640, 15088) for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the engine control module
• Slow sensor response during closed-loop operation
• Emissions test failures tied to faulty upstream sensor readings
• Rough idle or drivability concerns caused by inaccurate exhaust oxygen data

Installation Notes and Tips

Verify the exact position on your vehicle before ordering, since this sensor is listed for front and front-left locations only. Confirm thread size, connector shape, wire count, and overall length against the original sensor. For BMW M3 and BMW Z3 applications, the listed fitment applies to cylinders 1 through 6. Use the included instruction sheet during installation and inspect the harness routing before final tightening.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and application knowledge developed through long-term supplier experience with global automakers. The ES10581 oxygen sensor is engineered to meet the demands of emission control service on the listed BMW and Mercedes-Benz vehicles.