Delphi ES20352 Oxygen Sensor - Front, Rear or Rear Left

Delphi ES20352 Oxygen Sensor Overview

The Delphi ES20352 is a heated oxygen sensor built for direct-fit emission control service on a wide range of GM applications. It uses a 4-wire design with a square connector and 18 x 1.5 mm thread size, making it a practical replacement for front, rear, and rear left positions where specified by the vehicle application.

Backed by Delphi’s OE heritage and more than a century of original-equipment experience, this oxygen sensor reflects the same engineering knowledge used in aftermarket replacement parts. It is a strong match for drivers searching for a Delphi ES20352 oxygen sensor for Chevrolet Silverado 1500, GMC Sierra 1500, or Cadillac CTS service.

Key Features

• Heated oxygen sensor for faster operating temperature and emissions feedback
• 4-wire configuration with square connector shape
• 18 x 1.5 mm thread size for direct-fit installation where listed
• Overall length: 430.0
• Package contents include the oxygen sensor and instruction sheet
• Fits front, rear, and rear left positions depending on vehicle application
• OE-informed design from Delphi, part number ES20352

Detailed Description

Delphi ES20352 is an emission control sensor used to monitor exhaust oxygen content and support proper fuel control and catalyst efficiency. It is listed across multiple GM platforms, including 2006-2013 Chevrolet Silverado 1500 front, 2006-2013 GMC Sierra 1500 front, 2006-2009 Chevrolet Impala front and rear, and 2006-2007 Cadillac CTS front. Additional coverage includes Chevrolet Colorado, GMC Canyon, Buick Lucerne, Cadillac DTS, Hummer H3, Hummer H3T, Trailblazer, Envoy, and related applications. This part cross-references DENSO Auto Parts (e.g., 234-4236, 234-4246) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel control accuracy
• Emissions test failures tied to sensor faults
• Slow or inconsistent sensor response

Installation Notes and Tips

Confirm the exact position before ordering, since ES20352 is listed for front, rear, and rear left locations depending on the vehicle. Match the connector shape, wire count, and thread size to the original sensor before installation. For fitment-specific searches, this part is commonly referenced for Fits 2006-2013 Chevrolet Silverado 1500, front; Fits 2006-2013 GMC Sierra 1500, front; and Fits 2006-2009 Chevrolet Impala, front or rear, depending on application.

Quality Assurance

Delphi builds this replacement sensor using OE-based engineering knowledge developed through long-term supplier experience with major automakers. The ES20352 is designed as a service replacement part for vehicles that require the listed sensor configuration and application match.