Walker 350-33044 Oxygen Sensor - Upstream Left

Overview of Walker 350-33044 Oxygen Sensor for Nissan and Infiniti

The Walker 350-33044 oxygen sensor is designed specifically for Nissan Pathfinder and Infiniti QX4 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 Pathfinder and Infiniti QX4
• 35.94-inch wiring harness length for flexible installation
• 20 gauge wire with 3-wire configuration
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 39.49 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-33044) is engineered to meet the exact specifications of Nissan Pathfinder and Infiniti QX4 vehicles. 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 sensor includes a 35.94-inch wiring harness with 20 gauge wires arranged in a 3-wire configuration, ensuring reliable electrical connectivity. Its radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter allow for a secure and precise installation. The overall length of 39.49 inches accommodates the specific routing requirements of the exhaust system in these vehicles.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, providing a direct replacement solution designed to maintain factory performance and emissions compliance for Nissan and Infiniti vehicles.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and poor fuel economy
• Reduces emissions-related check engine light triggers
• Improves engine performance by ensuring correct sensor feedback
• Prevents failed emissions tests due to faulty oxygen sensors

Installation Notes and Tips

When installing the Walker 350-33044 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Confirm the radiused polygon male connector is fully seated and locked in place. Thread the sensor carefully to avoid cross-threading, tightening to manufacturer torque specifications. Verify all connections before starting the engine.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. The 350-33044 part number undergoes rigorous testing to ensure reliable operation in Nissan Pathfinder and Infiniti QX4 vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.