Walker 350-34364 Oxygen Sensor - Downstream Left

Overview of Walker 350-34364 Oxygen Sensor for Nissan and Infiniti

The Walker 350-34364 oxygen sensor is designed specifically for select Nissan and Infiniti 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 to the vehicle’s engine management system.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Nissan Pathfinder and Infiniti QX4
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 45.59 inches and overall length of 49.13 inches
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-34364) features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. The sensor includes a 4-wire design, which supports both the sensor signal and heater circuit, ensuring consistent operation under various engine conditions. The connector is a radiused polygon shape with a male gender, providing a secure and precise fit to the vehicle’s wiring harness. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.

The wiring harness length of 45.59 inches and overall sensor length of 49.13 inches are engineered to match the specific routing and fitment requirements of the Nissan Pathfinder and Infiniti QX4 models. The 20-gauge wire measurement supports durability and reliable electrical conductivity.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct-fit solution designed to maintain factory performance and emissions compliance for Nissan and Infiniti vehicles. The product line emphasizes quality construction and precise fitment to support vehicle longevity and regulatory standards.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve engine performance issues such as rough idling or hesitation
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by ensuring correct emissions feedback
• Supports emissions system compliance for Nissan Pathfinder and Infiniti QX4

Installation Notes and Tips

Installation of the Walker 350-34364 oxygen sensor requires removal of the old sensor from the exhaust manifold or pipe. The threaded mounting type with an 18.0 mm diameter allows for standard oxygen sensor socket use. Ensure the radiused polygon male connector is properly aligned and securely connected to the vehicle’s wiring harness. Avoid damaging the wiring harness during installation and verify sensor wiring integrity before finalizing the installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34364 should be confirmed at the point of purchase, Walker typically offers limited warranties covering defects in materials and workmanship. This ensures reliable performance and peace of mind when replacing oxygen sensors on Nissan Pathfinder and Infiniti QX4 vehicles.