Walker 350-34494 Oxygen Sensor

Walker 350-34494 Oxygen Sensor Overview

Walker Products 350-34494 is a heated oxygen sensor built as a specific-fit OE replacement for downstream applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on supported Chevrolet, GMC, Cadillac, Pontiac, Saturn, and Buick applications.

For vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, this downstream oxygen sensor helps restore accurate exhaust readings when the original sensor is no longer performing correctly.

Key Features

• Heated oxygen sensor for downstream use
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for application-specific fitment
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 13.31 in.
• Overall length: 16.85 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE-style replacements for many vehicles worldwide. Part number 350-34494 is built for the specified position on the vehicle so the ECU receives the correct diagnostic feedback. This matters on newer vehicles that store fault codes when a sensor or related circuit is not operating correctly. The Walker Products 350-34494 oxygen sensor is a direct-fit solution for downstream left, downstream right, downstream front, and downstream rear positions across the listed applications, including Chevrolet Camaro, Silverado, Tahoe, GMC Yukon, and Cadillac Escalade models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Sensor Can Address

• Check engine light related to downstream oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Elevated exhaust emissions from a failing sensor
• Rough engine operation tied to incorrect ECU input
• Fault codes stored for Bank 1 Sensor 2 or Bank 2 Sensor 2 positions

Installation Notes and Fitment

Fits 2014-2017 Chevrolet Caprice, downstream right.

Fits 2014-2017 Chevrolet Caprice, downstream left.

Fits 2014-2017 Chevrolet SS, downstream right.

Fits 2014-2017 Chevrolet SS, downstream left.

Fits 2010-2015 Chevrolet Camaro, downstream right.

Fits 2010-2015 Chevrolet Camaro, downstream left.

Fits 2015 Chevrolet Silverado 2500 HD, downstream right.

Fits 2015 Chevrolet Silverado 2500 HD, downstream left.

Fits 2009-2010 Chevrolet Silverado 2500 HD, downstream right.

Fits 2009-2010 Chevrolet Silverado 2500 HD, downstream left.

Fits 2009-2014 Cadillac Escalade, downstream right.

Fits 2009-2014 Cadillac Escalade, downstream left.

Fits 2009-2014 GMC Yukon, downstream right.

Fits 2009-2014 GMC Yukon, downstream left.

Use the vehicle’s original sensor location, connector style, and thread size to confirm placement before installation. Inspect the sensor wiring harness and connector for damage, since damaged circuits can shorten sensor life and trigger diagnostic trouble codes. For Chevrolet Silverado 1500 and GMC Sierra 1500 applications, verify whether the vehicle calls for Bank 1 Sensor 2 or Bank 2 Sensor 2 placement.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-34494 is produced for specific application fitment and ECU feedback requirements on the listed vehicles.