Walker 350-34650 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker Oxygen Sensor for Nissan and INFINITI

Walker Products Part Number 350-34650 is an OE-style oxygen sensor for downstream applications on select Nissan and INFINITI vehicles. It is engineered for the specified mounting position and provides the ECU with the feedback needed for proper fuel control and emissions monitoring.

Key Features

• Walker Products Aftermarket engine management sensor line
• Downstream oxygen sensor for right-side, left-side, and downstream applications where listed
• Built for application-specific fitment and ECU feedback
• OE replacement for select Nissan Armada, Rogue, and INFINITI Q50, Q60, and QX80 models
• Part number 350-34650 for fitment-based lookup and ordering

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed as OE replacement parts for a wide range of vehicles. This oxygen sensor is matched to the listed vehicle, year, and position so the engine control unit receives the correct signal for downstream monitoring. For shoppers searching for a downstream oxygen sensor for 2020-2022 Nissan Armada, a downstream sensor for 2021-2022 Nissan Rogue, or a replacement oxygen sensor for INFINITI Q50, Q60, and QX80, part number 350-34650 is the application-specific choice.

This part cross-references no additional part numbers were provided for this application.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation tied to sensor signal issues
• Elevated exhaust emissions from a failing oxygen sensor
• Stored ECU fault codes linked to the affected sensor circuit

Installation Notes

• Verify the exact year, make, model, and sensor position before ordering.
• Match the listed side or downstream location to the vehicle configuration.
• Inspect the sensor, wiring harness, and connector for damage before installation.
• Confirm the ECU fault code points to the affected downstream sensor circuit.
• Use the vehicle service information for proper removal and installation procedures.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34650 oxygen sensor is manufactured for the specified application and position to support OE-style replacement needs on the listed Nissan and INFINITI vehicles.