Walker 350-64084 Oxygen Sensor - Upstream, Upstream Front or Upstream Rear

Walker 350-64084 Oxygen Sensor Overview

Walker Products 350-64084 is a heated, threaded oxygen sensor built as a specific-fit replacement for select 2007 Nissan applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring in the upstream exhaust position.

• Heated oxygen sensor for faster operating response
• Specific fit design for the listed Nissan applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for direct replacement fitment
• 18.0 mm thread diameter and threaded mounting style
• 13.31 in. wiring harness length and 16.85 in. overall length

Walker Products Aftermarket Line

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors built for OE-style replacement use. The line is developed around application-specific fitment, so the sensor position, connector style, and feedback characteristics align with the vehicle’s original emissions control requirements.

Detailed Application Fitment

This Walker 350-64084 oxygen sensor is listed for 2007 Nissan Altima upstream rear, 2007 Nissan Altima upstream front, 2007 Nissan Sentra upstream, and 2007 Nissan Versa upstream. In these applications, the sensor supports the exhaust system’s air-fuel monitoring strategy and helps the ECU maintain proper mixture control.

Walker Products 350-64084 is a direct replacement oxygen sensor for 2007 Nissan Altima, 2007 Nissan Sentra, and 2007 Nissan Versa upstream positions. It is designed for vehicles that require a heated, threaded sensor with the specified connector shape and wire layout.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing upstream sensor
• Stored ECU fault codes tied to the sensor circuit or related systems

Installation Notes

Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear. Confirm the threaded mounting location, connector shape, and upstream position on the vehicle before installation. For best results, verify the application against the vehicle’s exhaust layout and ECU fault codes.

Quality Assurance

Walker Products has produced engine management components since 1946 and operates under Automotive ISO9001/TS 16949 certification. This part cross-references no additional part numbers in the provided data.