Walker 350-33070 Oxygen Sensor - Upstream

Overview of Walker 350-33070 Oxygen Sensor

The Walker 350-33070 oxygen sensor is designed specifically for select Mercury and Nissan vehicles, including the Maxima, Quest, and Villager models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance through precise air-fuel mixture monitoring.

• Heated sensor type for faster response times
• Specific fit for Mercury Maxima, Nissan Quest, and Villager
• Threaded mounting type with 12.0 mm thread diameter
• 26.1-inch wiring harness length with 3 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 29.65 inches for proper installation

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to exact vehicle specifications. The line emphasizes compatibility and durability, ensuring that parts like the 350-33070 oxygen sensor meet the demands of modern emission systems in Mercury and Nissan vehicles.

Product Description and Attributes

The Walker 350-33070 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emission readings shortly after engine start. It includes a 26.1-inch wiring harness with three 20-gauge wires, designed to maintain signal integrity and withstand automotive conditions. The sensor’s radiused polygon male connector ensures a secure and precise fit, reducing the risk of connection issues. Its threaded mounting type with a 12.0 mm diameter allows for straightforward installation in the exhaust system of compatible vehicles. The overall length of 29.65 inches provides adequate reach for proper placement within the exhaust stream.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for Mercury Maxima, Nissan Quest, and Villager
• Reduces emissions by providing accurate oxygen level data to the engine control unit
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel efficiency by enabling precise fuel mixture adjustments

Installation Notes and Tips

When installing the Walker 350-33070 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Confirm the radiused polygon male connector aligns correctly with the vehicle’s wiring harness connector to avoid damage. Verify the wiring harness length and routing to prevent contact with hot or moving parts. Proper torque specifications should be followed to secure the sensor without damaging the threads.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and vehicle-specific requirements. The 350-33070 part number is manufactured to precise specifications to ensure consistent performance and durability. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary by region and application.