Walker 350-33017 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker 350-33017 Oxygen Sensor Overview

Walker Products 350-33017 is a heated oxygen sensor built as a specific-fit OE replacement for select Audi applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on 1992-1993 Audi 100, 100 Quattro, and 90 Quattro models in upstream left or upstream right positions.

Key Features

• Heated oxygen sensor for faster operating temperature and signal response
• Specific-fit design for the listed Audi applications
• 3-wire configuration with 20-gauge wiring
• 17.44 in. wiring harness length and 20.98 in. overall length
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon connector shape with female and male connector ends
• Walker Products Aftermarket line engineered for OE-style replacement use

Detailed Product Description

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed as direct replacement parts for specific vehicle applications. Part number 350-33017 is built for upstream sensor locations on select Audi 100, Audi 100 Quattro, and Audi 90 Quattro models, including left and right positions where listed. This oxygen sensor helps the ECU monitor exhaust oxygen content so the engine can maintain the correct air-fuel ratio and emissions performance.

For fitment-based searches, this part is a direct option for a 1992 Audi 100 upstream left oxygen sensor, a 1992 Audi 100 upstream right oxygen sensor, a 1992 Audi 100 Quattro upstream left oxygen sensor, and a 1992 Audi 100 Quattro upstream right oxygen sensor. It also fits 1993 Audi 100 Quattro upstream left and upstream right applications, plus 1993 Audi 90 Quattro upstream left and upstream right applications within the listed chassis breakpoints. Walker 350-33017 is a practical replacement when the original sensor has aged, set fault codes, or is no longer providing accurate feedback to the ECU.

What This Oxygen Sensor Can Help Address

• Check engine light or MIL related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough running or inconsistent air-fuel control
• Higher exhaust emissions from a worn upstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle year, model, and sensor position before ordering, since this part is specific to upstream left and upstream right applications only. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Because the sensor uses a threaded mount and a specific connector style, compare the original part’s physical layout, thread size, and harness length to the replacement before service. This part cross-references Bosch 13913 for the same application.

Quality Assurance

Walker Products manufactures engine management sensors as OE-style replacements and operates as an Automotive ISO 9001/TS 16949 certified company. The 350-33017 is produced for the specified application and fitment position to support the diagnostic feedback expected by the ECU.