Walker 350-34581 Oxygen Sensor

Walker 350-34581 Oxygen Sensor Overview

Walker Products 350-34581 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for a wide range of GM applications. It is built for upstream positions and provides the ECU with the feedback needed to monitor air-fuel performance and emissions control.

Use this sensor when you need a direct-fit replacement for vehicles such as the Chevrolet Silverado 1500, Cadillac CTS, and GMC Yukon. The Walker Products Aftermarket line focuses on application-specific engine management components, with fitment matched to the vehicle position and connector style.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit for the listed upstream applications
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• 14.09 in. wiring harness length and 17.64 in. overall length
• Radiused polygon connector shape for application-specific fitment

Detailed Description

Walker Products part number 350-34581 is an upstream oxygen sensor designed for vehicles that rely on precise exhaust feedback to manage fuel delivery and emissions. It is listed across multiple Chevrolet, Cadillac, GMC, Buick, Pontiac, and Saturn applications from 2008 through 2017, including upstream left, upstream right, upstream front, and upstream rear positions where specified. Confirm the exact bank and sensor location before ordering, especially on vehicles such as the Chevrolet Malibu, Chevrolet Impala, and Cadillac Escalade.

This part cross-references Bosch 15717 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Elevated exhaust emissions from a failing upstream sensor
• Rough engine operation tied to inaccurate ECU input
• Fault codes stored for bank or sensor-specific oxygen sensor issues

Installation Notes and Tips

Verify the vehicle year, make, model, and exact sensor position before installation. Inspect the wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect signal quality. Threaded installation requires proper seating in the exhaust bung and careful routing of the harness away from hot components.

For fitment, this part fits 2016-2017 Chevrolet Spark Classic, upstream; fits 2013-2016 Chevrolet Spark, upstream; fits 2009-2015 Cadillac CTS, upstream left or upstream right; and fits 2008-2014 Chevrolet Tahoe, upstream left or upstream right. It also fits 2008-2013 Chevrolet Silverado 1500, upstream left or upstream right, and 2008-2014 GMC Yukon, upstream left or upstream right.

Quality Assurance

Walker Products has supplied engine management and oxygen sensor components since 1946 and manufactures application-specific replacements for OE-style fitment and ECU feedback requirements. The brand operates with Automotive ISO9001/TS 16949 certification.