Walker 350-33103 Oxygen Sensor - Upstream

Overview of Walker 350-33103 Oxygen Sensor for Nissan and Infiniti

The Walker 350-33103 oxygen sensor is designed specifically for select Nissan and Infiniti models, including the Altima, Frontier, G20, and Xterra. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 3-wire configuration
• Specific fit for Nissan Altima, Frontier, G20, and Infiniti Xterra
• Threaded mounting type with 18.0 mm thread diameter
• Connector features a radiused polygon shape with male gender
• Wiring harness length of 11.34 inches and overall length of 14.88 inches
• Wire gauge measurement of 20 for reliable electrical performance

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and reliable sensor performance to maintain factory-level emissions standards and engine efficiency.

Product Features and Specifications

The Walker 350-33103 oxygen sensor is a heated sensor type, which allows it to reach operating temperature quickly for accurate readings. It includes three wires with a 20-gauge measurement, ensuring stable electrical signals. The sensor mounts via a threaded connection with an 18.0 mm diameter, compatible with the exhaust system of Nissan and Infiniti vehicles listed. The connector is designed with a radiused polygon shape and male gender to match factory wiring harnesses, simplifying installation. The wiring harness length of 11.34 inches and overall length of 14.88 inches provide adequate reach and fitment within the engine bay.

Compatible Vehicles and Applications

• Nissan Altima oxygen sensor replacement
• Nissan Frontier emission sensor upgrade
• Infiniti G20 oxygen sensor fitment
• Infiniti Xterra exhaust sensor replacement

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor
• Poor fuel economy due to incorrect air-fuel mixture readings
• Failed emissions tests caused by sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Increased exhaust emissions from inaccurate sensor data

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector shape and gender match the factory harness before installation. The 11.34-inch wiring harness length provides flexibility, but routing should avoid heat sources and moving parts. Threaded mounting requires proper torque to prevent leaks or sensor damage.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine efficiency in Nissan and Infiniti vehicles.