Walker 350-34469 Oxygen Sensor - Downstream Left

Walker 350-34469 Oxygen Sensor Overview

Walker Products 350-34469 is a heated oxygen sensor built as a specific-fit OE replacement for select Nissan and INFINITI applications. It is engineered to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.

Compatible With 1996-2000 Nissan Pathfinder, downstream left, and 1997-2000 INFINITI QX4, downstream left. This Walker Products Aftermarket sensor is designed around the application’s mounting position, connector style, and wiring requirements.

Key Features

• Heated oxygen sensor for downstream left placement
• Specific-fit design for direct application matching
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for vehicle-side connection
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 47.36 in; overall length: 50.91 in

Application Details

Walker Products 350-34469 is part of the Walker Products Aftermarket engine management line, which focuses on OE-style replacement sensors for vehicle-specific fitment and ECU feedback requirements. For 1996-2000 Nissan Pathfinder and 1997-2000 INFINITI QX4 models, this downstream left oxygen sensor is specified for the correct position and connector layout. The part number 350-34469 is a direct reference for shoppers searching for a replacement oxygen sensor for these vehicles.

This part cross-references Walker Products 350-34469 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation from incorrect air-fuel correction
• Elevated exhaust emissions from a failing downstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Verify the downstream left location before ordering and compare the connector shape, wire count, and thread size to the original sensor. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Because this is a threaded sensor, proper removal and installation practices are important to avoid damage to the exhaust bung or sensor body.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts for specific vehicle applications and manufactured under Automotive ISO9001/TS 16949 quality systems. Since 1946, the brand has focused on engine management and fuel system components for automotive service use.