Walker 350-34596 Oxygen Sensor

Walker 350-34596 Oxygen Sensor Overview

Walker Products 350-34596 is a heated oxygen sensor built as a direct OE-style replacement for specific GM applications. It is engineered for the correct fitment position, uses a 4-wire design, and provides the ECU with the feedback needed for fuel control and emissions monitoring.

Fits 2018 Chevrolet Silverado 3500, upstream right. Fits 2008-2013 Chevrolet Silverado 3500, upstream right. Fits 2008-2009 Buick Allure and Buick LaCrosse, downstream. Fits 2008 Pontiac Grand Prix, downstream. Fits 2001-2002 Chevrolet Express 3500, upstream right, upstream left, downstream right, or downstream left depending on application. Fits 2001-2002 GMC Savana 3500, upstream right, upstream left, downstream right, or downstream left depending on application.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for proper harness connection
• 13.31 in. wiring harness length and 16.85 in. overall length

Detailed Description

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE replacements for a wide range of vehicles. Part number 350-34596 is built for application-specific fitment and the diagnostic feedback expected by the ECU. For GM trucks, vans, and passenger cars, this oxygen sensor supports accurate exhaust monitoring in upstream and downstream positions where listed.

This part cross-references Walker Products 350-34596 for the same application. It is a practical replacement for vehicles such as Chevrolet Silverado 3500, Buick LaCrosse, and Pontiac Grand Prix when the original sensor has failed or is reporting incorrect data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a failing sensor
• Fault codes stored in the ECU for sensor circuit or response issues

Installation Notes and Tips

• Verify the exact year, make, model, and sensor position before ordering.
• Confirm upstream or downstream placement, along with left or right side where required.
• Inspect the sensor connector, wiring harness, and nearby terminals for damage before installation.
• Check for exhaust leaks or wiring faults that can shorten sensor life or trigger repeat codes.
• Use the vehicle’s emissions configuration notes, including California or non-California applications, to confirm the correct match.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures to automotive ISO 9001/TS 16949 standards. The 350-34596 oxygen sensor is produced for the specified application and fitment position to support proper ECU feedback and reliable emissions-system operation.