Walker 350-34031 Oxygen Sensor - Upstream

Overview of Walker Oxygen Sensor 350-34031

The Walker 350-34031 oxygen sensor is designed specifically for Nissan D21 and Pathfinder models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Nissan D21 and Pathfinder vehicles
• 68.03 inches wiring harness length for flexible installation
• 20 gauge wire with 4-wire configuration
• Radiused polygon male connector for secure connection
• 12.0 mm threaded mounting for reliable fit
• Overall length of 71.57 inches for proper placement

Detailed Product Description

This Walker oxygen sensor (part number 350-34031) is engineered to meet the exact specifications of Nissan D21 and Pathfinder models. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, improving fuel efficiency and reducing emissions sooner after engine start. The 4-wire design includes a dedicated heater circuit and signal wires, ensuring accurate oxygen level readings. The wiring harness length of 68.03 inches allows for convenient routing within the engine bay, while the radiused polygon male connector ensures a secure and precise electrical connection. The sensor mounts via a 12.0 mm threaded fitting, compatible with factory mounting points for straightforward installation.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This oxygen sensor is part of their aftermarket line, providing a reliable replacement option tailored for specific vehicle applications like the Nissan D21 and Pathfinder. The focus on exact fitment and quality materials supports consistent sensor performance and durability.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Nissan D21 and Pathfinder
• Helps resolve rough idling and poor fuel economy caused by inaccurate oxygen readings
• Reduces emissions by ensuring proper air-fuel mixture monitoring
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 350-34031 oxygen sensor, ensure the engine is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness for a secure fit. Thread the sensor carefully into the mounting hole to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34031 should be confirmed at purchase, Walker typically offers coverage against defects in materials and workmanship. This ensures dependable performance and peace of mind when replacing emission control sensors on Nissan D21 and Pathfinder vehicles.