Walker 350-34134 Oxygen Sensor

Walker 350-34134 Oxygen Sensor Overview

Walker Products 350-34134 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Chevrolet, Pontiac, and Oldsmobile 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. This part number is matched to the mounting position and connector style required for the listed vehicles, including downstream and bank-specific applications.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for proper harness connection
• Wiring harness length: 42.44 in.; overall length: 45.98 in.
• Fits downstream, downstream front, downstream left, and downstream right positions where listed

Detailed Description

Walker 350-34134 is designed for vehicles that rely on accurate downstream oxygen sensor feedback to support ECU monitoring and emissions control. As an OE-replacement style sensor, it is built for the specified application and position, including 2004 Oldsmobile Alero, 1999-2004 Pontiac Grand Am, 1997-2003 Chevrolet Corvette, 2000-2003 Chevrolet Malibu, 1999-2003 Oldsmobile Alero, and other listed fitments. This part number, 350-34134, is also listed for select 1997-1999 Chevrolet Malibu and 1997-1999 Oldsmobile Cutlass applications.

Walker Products Aftermarket has supplied engine management components since 1946, and this oxygen sensor reflects that focus on application-specific fitment and ECU feedback. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation linked to sensor signal issues
• Elevated exhaust emissions from a failing oxygen sensor
• Fault codes stored in the ECU for affected sensor circuits

Installation Notes and Tips

• Verify the exact position before installation: downstream, downstream front, downstream left, or downstream right as listed.
• Confirm connector shape, wire count, and thread diameter match the original sensor.
• Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement.
• Check for stored ECU fault codes and address related exhaust or wiring concerns as needed.
• Use the vehicle-specific fitment notes for Pontiac Grand Am applications with or without EGR valve references.

Quality Assurance

Walker Products manufactures engine management sensors under Automotive ISO9001/TS 16949 quality systems. The 350-34134 is built for specific vehicle applications and intended to provide the diagnostic response required by the ECU.