Walker 350-34397 Oxygen Sensor - Downstream

Overview of Walker 350-34397 Oxygen Sensor

The Walker 350-34397 oxygen sensor is designed specifically for select Chevrolet and Mitsubishi models, including the Astra, Lancer, and Outlander. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for Chevrolet Astra, Mitsubishi Lancer, and Outlander
• 19.21-inch wiring harness length with 4 wires
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure connection
• Overall length of 22.76 inches for proper installation
• 20 gauge wire for reliable signal transmission

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 Walker Products Aftermarket sensors are designed to deliver consistent performance and durability, making them suitable for maintaining factory-level emissions compliance in Chevrolet and Mitsubishi vehicles.

Product Features and Specifications

The Walker 350-34397 oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire design supports both the sensor signal and heater circuit, ensuring accurate readings and reliable operation. The radiused polygon female connector provides a secure and precise fit, minimizing the risk of connection issues. With a threaded mounting type and an 18.0 mm thread diameter, this sensor installs directly into the exhaust system for accurate monitoring of oxygen levels.

Common Applications and Problem Resolution

• Restores proper air-fuel ratio monitoring in Chevrolet Astra and Mitsubishi Lancer and Outlander
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce emissions and prevent failed emissions tests
• Eliminates rough idling and poor fuel economy caused by sensor failure
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 350-34397 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly torque the sensor to manufacturer specifications to prevent exhaust leaks. It is recommended to inspect wiring and connectors for damage during replacement.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. The 350-34397 part number undergoes rigorous testing to ensure reliable operation in Chevrolet and Mitsubishi vehicles. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use.