Delphi ES20011 Oxygen Sensor - Front or Rear

Delphi ES20011 Oxygen Sensor Overview

The Delphi ES20011 is a heated oxygen sensor built for precise exhaust monitoring in select Chevrolet, Cadillac, Saab, Buick, and Saturn applications. It uses a 4-wire design with a flat connector and 18 x 1.5 mm thread size for direct-fit replacement in front or rear sensor locations, depending on vehicle application.

Built from Delphi’s OE heritage and decades of supplier experience with major automakers, this oxygen sensor is engineered to reflect the fit, form, and function expected in modern emission control service. The ES20011 is a practical choice for drivers servicing a 2011-2015 Chevrolet Cruze rear oxygen sensor, a 2010-2011 Cadillac SRX front oxygen sensor, or other listed applications.

Key Features

• Heated oxygen sensor for faster operating temperature and exhaust feedback
• 4-wire configuration for common OE-style sensor circuits
• Flat connector shape for application-specific harness connection
• 18 x 1.5 mm thread size for direct-thread installation
• 400.0 overall length for proper routing in the exhaust system
• Includes oxygen sensor and instruction sheet
• Fits front and rear positions, depending on vehicle application

Detailed Description

Delphi ES20011 is an emission control oxygen sensor designed to monitor exhaust oxygen content and support engine management on select vehicles. Accurate sensor input helps the powertrain control module adjust fuel delivery and maintain proper emissions performance. This part cross-references Bosch 16205 and DENSO Auto Parts 234-4528 for the same application. Use the application tab to confirm whether your vehicle requires the front or rear position.

Compatible With 2016 Chevrolet Cruze Limited, rear; 2011-2015 Chevrolet Cruze, rear; 2010-2011 Cadillac SRX, front or rear; 2010-2011 Saab 9-5, front; 2004 Buick Rendezvous, rear; 2003-2004 Cadillac CTS, front or rear; and 2002-2003 Saturn Vue, front or rear. The Delphi ES20011 part number is also a useful reference when comparing OE-style replacement options for these vehicles.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to exhaust monitoring faults
• Rough fuel control caused by inaccurate exhaust readings

Installation Notes and Tips

• Confirm the correct front or rear position before ordering.
• Verify thread size and connector shape against the original sensor.
• Inspect the harness routing and connector condition before installation.
• Follow the vehicle service procedure for sensor removal and torque.
• Clear diagnostic trouble codes after installation and verify system operation.

Quality Assurance

Delphi builds this oxygen sensor using OE-focused engineering informed by more than 100 years of original equipment experience. The ES20011 reflects Delphi’s supplier background with leading automakers and is designed to meet the demands of emission control service in the listed applications.