Walker 350-35015 Oxygen Sensor

Walker Products 350-35015 Oxygen Sensor

Walker Products 350-35015 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for select Audi, Volkswagen, and Porsche applications. It is built for upstream installation and provides the ECU with the exhaust feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for faster operating temperature and signal response
• Specific-fit design for direct application matching
• 5-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 31.02 in.; overall length: 34.57 in.
• Radiused polygon connector shape for application-specific fitment
• Walker Products Aftermarket engine management sensor line

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed for OE replacement use across a wide range of vehicles. Part number 350-35015 is designed for upstream sensor locations and is used where the ECU relies on precise exhaust oxygen feedback to manage air-fuel ratio and emissions performance. This sensor is a direct-fit option for vehicles such as the Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi Allroad Quattro, Audi S4, Audi TT Quattro, Volkswagen Passat, Volkswagen Touareg, Volkswagen Phaeton, Volkswagen Sharan, Porsche Cayenne, and Audi A8 Quattro in the listed positions.

This part cross-references no listed interchange numbers in the provided data. Walker Products 350-35015 is a practical replacement choice when diagnosing upstream oxygen sensor faults on 2002-2009 Audi, Volkswagen, and Porsche platforms.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Elevated exhaust emissions from poor sensor response
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes

Verify the vehicle’s exact engine, bank, and sensor position before ordering. This sensor is listed for upstream right, upstream left, upstream front, and upstream applications depending on the vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, since damaged wiring can shorten sensor life and affect ECU feedback.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-35015 is manufactured for specific application fitment and diagnostic feedback requirements.