Walker 350-64086 Oxygen Sensor

Walker 350-64086 Oxygen Sensor for Nissan and INFINITI

Walker Products 350-64086 is a heated, specific-fit oxygen sensor engineered as an OE replacement for select Nissan and INFINITI applications. It is built for the correct application and mounting position, helping the ECU receive the feedback it expects from the exhaust system.

For drivers dealing with a check engine light, poor fuel economy, or rough engine operation, this Walker Products Aftermarket oxygen sensor is a direct-fit service part for upstream locations on a wide range of Nissan Rogue, Maxima, Armada, and INFINITI QX60 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 OE-style connection
• Wiring harness length: 17.24 in.
• Overall length: 20.79 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for many vehicles worldwide. Part number 350-64086 is designed for upstream sensor locations and is listed across multiple Nissan and INFINITI models, including Nissan Rogue, Nissan Maxima, Nissan Armada, Nissan Pathfinder, Nissan Frontier, Nissan TITAN, and INFINITI QX60, QX80, Q50, and Q70 applications. This part number, 350-64086, is intended to restore the diagnostic feedback the ECU relies on for fuel control and emissions monitoring.

This part cross-references no listed aftermarket part numbers in the provided data.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rough idle or poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Fitment

Fits 2017-2021 Nissan Rogue, upstream. Fits 2015-2020 Nissan Maxima, upstream front or upstream rear. Fits 2017-2019 Nissan Armada, upstream right or upstream left. Fits 2016-2019 Nissan Pathfinder, upstream right or upstream left. Fits 2016-2019 Nissan Frontier, upstream right or upstream left. Fits 2017-2019 Nissan TITAN, upstream right or upstream left. Fits 2016-2019 INFINITI QX60, upstream right or upstream left. Fits 2017-2019 INFINITI QX80, upstream right or upstream left.

• Confirm the sensor position before ordering: upstream, upstream front, upstream rear, upstream right, or upstream left.
• Inspect the sensor, wiring harness, and connector for physical damage before installation.
• Check for stored ECU fault codes after replacement and clear codes as needed.
• Use the listed fitment notes for model-year breakpoints, especially on 2014-2016 and 2015-2016 applications.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-64086 oxygen sensor is produced for specific application fitment and diagnostic feedback requirements, supporting OE-style service on Nissan and INFINITI vehicles.