Walker 350-33006 Oxygen Sensor - Upstream Left

Overview of Walker Oxygen Sensor 350-33006

The Walker 350-33006 oxygen sensor is designed specifically for select INFINITI and Nissan models, including the Pathfinder and QX4. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with threaded mounting
• Specific fit for INFINITI Pathfinder and Nissan QX4
• 34.57-inch wiring harness length with 3 wires
• 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• 18.0 mm thread diameter and 38.11-inch overall length

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 350-33006) features a heated sensor element that allows for faster warm-up times and improved sensor response. The sensor is designed with a threaded mounting type and an 18.0 mm thread diameter, ensuring a secure and precise fit in the exhaust system. The wiring harness measures 34.57 inches in length and includes three 20 gauge wires, providing reliable electrical connectivity. The connector is a radiused polygon shape with a male gender, designed to match the factory wiring harness for the INFINITI Pathfinder and Nissan QX4 models. The overall length of the sensor is 38.11 inches, accommodating installation requirements in the vehicle's exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line offers a range of emission control components engineered to meet or exceed OEM specifications. This product line focuses on delivering reliable and durable sensors that maintain vehicle emissions compliance and engine efficiency. The 350-33006 oxygen sensor is part of this line, providing a direct replacement solution tailored for specific vehicle applications.

Applications and Common Issues Addressed

• Restores accurate air-fuel ratio readings for engine control
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates check engine light codes related to oxygen sensor failure
• Improves overall engine performance and drivability

Installation Notes and Tips

When installing the Walker 350-33006 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the thread size matches the exhaust port and tighten the sensor to manufacturer torque specifications. Confirm the connector securely mates with the vehicle’s wiring harness to prevent signal interruptions.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 350-33006 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability.