Walker 350-34513 Oxygen Sensor

Walker 350-34513 Oxygen Sensor Overview

Walker Products 350-34513 is a heated oxygen sensor built as an OE-style replacement for specific downstream applications. It is engineered for direct fitment and ECU feedback on vehicles that rely on accurate exhaust monitoring for fuel control and emissions management.

Use this Walker Products Aftermarket sensor when servicing downstream oxygen sensor faults on Cadillac CTS, Chevrolet Malibu, and related GM applications. The 350-34513 is designed around the specified mounting position, connector style, and wiring layout for a precise replacement.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for the listed vehicle applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire configuration with 20-gauge wiring
• 24.13 in. wiring harness length and 27.68 in. overall length
• Male connector with radiused polygon connector shape

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as replacement parts for original equipment applications. Part number 350-34513 is built to match the required sensor position and provide the diagnostic feedback expected by the ECU. This matters on vehicles such as the Cadillac CTS, Chevrolet Malibu, and Chevrolet Silverado 3500 HD, where a downstream oxygen sensor helps monitor exhaust efficiency after the catalytic converter.

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 incorrect exhaust feedback
• Elevated exhaust emissions from a failing sensor signal
• Rough engine operation tied to inaccurate ECU input
• Fault codes stored for Bank 1 Sensor 2 or Bank 2 Sensor 2 positions

Installation Notes

Verify the sensor location before installation, since this part is used in downstream left, downstream right, downstream rear, and downstream front positions depending on the vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement. Confirm thread size, connector shape, and wire length match the original unit before tightening the sensor into the exhaust bung.

Compatible With 2006-2015 Cadillac CTS, downstream left or downstream right; 2006-2010 Cadillac STS, downstream left or downstream right; 2007-2009 Cadillac SRX, downstream front; 2008-2012 Chevrolet Malibu, downstream rear; 2008-2010 Chevrolet Silverado 3500 HD, downstream left; 2008-2010 GMC Sierra 3500 HD, downstream left; 2008-2009 Pontiac G6, downstream rear; 2008-2009 Saturn Aura, downstream rear; and 2009 Chevrolet Captiva Sport, downstream rear.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an ISO 9001 / TS 16949 certified company. The 350-34513 is manufactured for specific application fitment and diagnostic performance requirements.