Walker 350-34493 Oxygen Sensor - Downstream

Overview of Walker 350-34493 Oxygen Sensor

The Walker 350-34493 oxygen sensor is designed specifically for Mercury Quest and Nissan Villager models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Mercury Quest and Nissan Villager
• 30.24-inch wiring harness length for flexible installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 33.78 inches for proper fitment

Detailed Product Description

This Walker oxygen sensor, part number 350-34493, is engineered to meet the exact specifications required by Mercury Quest and Nissan Villager vehicles. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, which helps reduce emissions during cold starts. The sensor includes a 30.24-inch wiring harness with 20 gauge wires and a total of four wires, ensuring accurate and stable signal transmission to the vehicle’s engine control unit. The radiused polygon female connector is designed for a secure and precise fit, minimizing the risk of connection issues. Its threaded mounting type with an 18.0 mm diameter allows for straightforward installation and reliable sensor positioning within the exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct fit and reliable performance for specific vehicle applications like the Mercury Quest and Nissan Villager. The product line emphasizes compatibility and durability to support proper emissions management and engine efficiency.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces vehicle emissions by accurately monitoring exhaust gases
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel economy by providing precise feedback to the engine control unit

Installation Notes and Tips

When installing the Walker 350-34493 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the connector shape and gender match the vehicle’s harness for a secure connection. Thread the sensor carefully into the exhaust port to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker oxygen sensors undergo rigorous testing to meet emission control standards and ensure durability. The 350-34493 sensor is manufactured to provide consistent performance and fitment for Mercury Quest and Nissan Villager models. Warranty details are provided by Walker Products Aftermarket and typically cover defects in materials and workmanship under normal use conditions.