Walker 350-34267 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker Oxygen Sensor for Nissan Downstream Applications

Walker Products 350-34267 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Nissan applications. It is designed for downstream monitoring, helping the ECU receive the feedback it needs for accurate fuel control and emissions management.

For Nissan Frontier, Nissan Xterra, and Nissan Pickup models, this Walker Products Aftermarket sensor is matched to the listed downstream positions and connector style for direct application-specific service.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for the listed Nissan applications
• 4-wire configuration with a male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 43.43 in.; overall length: 46.97 in.
• Radiused polygon connector shape for application-matched fitment
• Walker Products 350-34267 for select Nissan Frontier, Xterra, and Pickup models

Product Details

Walker Products Aftermarket engine management sensors are developed as OE replacement parts for worldwide vehicle coverage. Part number 350-34267 is engineered for the specified fitment position and built to provide the diagnostic feedback expected by the ECU. This oxygen sensor is intended for downstream use on select 1996-2003 Nissan Frontier, Xterra, and Pickup models, including downstream left, downstream right, and downstream bank 1 sensor 2 applications where listed.

Walker Products has produced engine management and fuel system components since 1946 and operates with Automotive ISO9001/TS 16949 certification. The 350-34267 oxygen sensor follows that application-specific approach for Nissan exhaust sensor service.

What It 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 control
• Higher exhaust emissions from a failing downstream sensor
• Fault codes stored in the ECU for sensor-related issues

Installation Notes

Verify the exact downstream position before installation. This part uses a threaded mount, 4-wire heated design, and a male connector, so connector shape and harness routing should be checked against the original sensor. Inspect the sensor wiring harness and connector for physical damage before replacement, since damaged wiring can shorten service life and affect operation.

Fits 2003 Nissan Frontier, downstream left; fits 1999-2000 Nissan Frontier, downstream left; fits 2000-2003 Nissan Xterra, downstream left; fits 2000 Nissan Frontier, downstream right; fits 1997 Nissan Pickup, downstream; fits 1996 Nissan Pickup, downstream.

Quality Assurance

Walker Products manufactures this sensor as an OE-style replacement under its Walker Products Aftermarket line, with application-specific fitment and ECU feedback requirements in mind. Part number 350-34267 is built for the listed Nissan downstream oxygen sensor applications.