Walker 350-34548 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of Walker 350-34548 Oxygen Sensor

The Walker 350-34548 oxygen sensor is designed specifically for select Nissan and INFINITI models, including the 200SX, 240SX, Altima, Q45, and Sentra. 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 design for reliable operation
• Specific fit for Nissan and INFINITI models: 200SX, 240SX, Altima, Q45, Sentra
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 9.37 inches and overall length of 12.91 inches
• Wire gauge measurement of 20 for durability and signal integrity

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components engineered to meet or exceed OEM specifications. The line emphasizes precise fitment and reliable sensor performance, making it suitable for maintaining factory-level emissions standards in Nissan and INFINITI vehicles.

Product Features and Specifications

The Walker 350-34548 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. It includes a 4-wire configuration, which supports both the sensor signal and heater circuit. The sensor’s radiused polygon male connector ensures a secure and corrosion-resistant connection to the vehicle’s wiring harness. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory specifications. The wiring harness length of 9.37 inches and overall length of 12.91 inches provide adequate reach and flexibility for proper placement in the exhaust system.

Compatible Vehicles and Applications

• Compatible with Nissan 200SX and 240SX models
• Suitable for Nissan Altima and Sentra vehicles
• Fits INFINITI Q45 models
• Designed for emission control sensor replacement in these specific vehicles

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure or slow response
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent exhaust leaks. Inspect wiring for damage and secure the harness to prevent strain or disconnection.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details for part number 350-34548 should be confirmed with the supplier, Walker typically offers limited warranties covering defects in materials and workmanship to ensure product reliability and customer confidence.