Walker 350-35013 Oxygen Sensor

Walker 350-35013 Oxygen Sensor Overview

Walker Products 350-35013 is a heated oxygen sensor built as a specific-fit OE replacement for select Audi and Cadillac applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for exact application fitment. The 350-35013 follows that approach with a threaded mount, 5-wire design, and a radiused polygon male connector for direct replacement service.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• Specific-fit design for direct replacement on listed vehicles
• 5-wire configuration with 20-gauge wiring
• 13.31 in. wiring harness length and 16.85 in. overall length
• 18.0 mm thread diameter with threaded mounting type
• Radiused polygon connector shape with male terminal

Detailed Description

The Walker 350-35013 oxygen sensor is designed for upstream exhaust locations where accurate air-fuel feedback is critical. It is listed for 2005-2012 Audi S5, 2009 Audi A5, 2007 Audi S6, and select 2005-2008 Cadillac CTS, 2005-2006 Cadillac SRX, and 2006-2007 Cadillac STS applications, including upstream left, upstream right, upstream front, and upstream rear positions where specified. This part number, 350-35013, is built to match the application-specific fitment and connector style required by the vehicle’s engine management system.

Walker Products has supplied engine management components since 1946 and manufactures sensors for OE-style replacement use across many vehicles worldwide. This part cross-references Bosch 15717 for the same application.

What It Is Used For

• Restoring oxygen sensor signal accuracy after sensor aging or failure
• Addressing check engine light conditions tied to upstream sensor faults
• Correcting poor fuel economy caused by inaccurate exhaust feedback
• Helping reduce elevated exhaust emissions from improper air-fuel control
• Replacing a damaged sensor, harness, or connector on the listed vehicles

Installation Notes and Tips

Verify the vehicle’s year, make, model, and sensor position before ordering. For 2005-2008 Cadillac CTS and SRX applications, confirm the correct upstream left or right location and note the listed design differences by model year. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Use the existing vehicle service information to confirm thread size, connector shape, and upstream placement.

Quality Assurance

Walker Products manufactures this sensor under ISO 9001/TS 16949 quality systems and builds it for application-specific OE replacement service. The 350-35013 is intended to provide the diagnostic feedback required by the ECU on the listed Audi and Cadillac vehicles.