Walker 350-34384 Oxygen Sensor

Walker 350-34384 Oxygen Sensor Overview

Walker Products 350-34384 is a heated oxygen sensor built as a specific-fit OE replacement for select Nissan, INFINITI, and Suzuki applications. It is designed to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance.

For drivers searching for a downstream oxygen sensor for Nissan Frontier, Pathfinder, Xterra, or 350Z applications, this Walker Products Aftermarket sensor is matched to the listed position and connector style for direct replacement service.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire configuration with 20-gauge wiring
• 16.46 in. wiring harness length and 20.0 in. overall length
• Male connector with radiused polygon connector shape
• Engineered for downstream sensor locations, including right, left, front, rear, and downstream positions where listed

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle coverage. Part number 350-34384 is built for specific application fitment and the required ECU feedback on the vehicles listed below. This matters on modern vehicles because the ECU can store fault codes tied to the sensor and related systems when the sensor begins to fail.

When a downstream oxygen sensor is no longer reading correctly, the vehicle may run poorly, use more fuel, increase exhaust emissions, or trigger the malfunction indicator light. On affected Nissan and INFINITI models such as Frontier, Pathfinder, Xterra, Maxima, 350Z, Altima, Quest, FX35, FX45, G35, M35, Q45, and M45, correct sensor position is important for proper operation. Walker 350-34384 is also listed for select Suzuki Equator applications.

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

What This Sensor May Address

• Check engine light related to downstream oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Elevated exhaust emissions from incorrect air-fuel monitoring
• Rough engine operation tied to sensor signal issues
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

• Verify the exact position before installation: downstream right, downstream left, downstream front, downstream rear, or downstream as listed for the vehicle.
• Inspect the sensor wiring harness and connector for physical damage before replacement.
• Confirm thread diameter and connector style match the original sensor.
• Use the vehicle-specific fitment list to confirm year, make, model, and sensor location before ordering.

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 350-34384 is manufactured for the specified application and position to support the diagnostic needs of the ECU on the listed vehicles.