Walker 350-64020 Oxygen Sensor - Upstream

Overview of Walker 350-64020 Oxygen Sensor for Subaru Vehicles

The Walker 350-64020 oxygen sensor is designed specifically for select Subaru models including Forester, Impreza, Legacy, Outback, and WRX. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor with 4-wire design for precise readings
• Specific fit for Subaru Forester, Impreza, Legacy, Outback, and WRX
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 8.39 inches and overall length of 11.93 inches
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-64020) features a heated sensor type that allows for faster warm-up times and improved fuel efficiency. The sensor includes four wires, which provide both the sensor signal and heater power, ensuring consistent operation under various engine conditions. The radiused polygon male connector is designed for a secure and precise fit, reducing the risk of electrical issues. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory specifications for the compatible Subaru models.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution tailored to specific vehicle applications. The product line emphasizes durability and accurate sensor performance to maintain proper engine management and emissions compliance.

Common Applications and Problem Resolution

• Restores accurate oxygen level readings for engine control units
• Helps resolve rough idling and poor fuel economy issues
• Addresses check engine light triggers related to oxygen sensor faults
• Improves emissions system performance for Subaru Forester, Impreza, Legacy, Outback, and WRX
• Supports proper catalytic converter function by providing correct exhaust data

Installation Notes and Tips

When installing the Walker 350-64020 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Confirm the connector matches the radiused polygon male design for a secure fit. Thread the sensor carefully into the exhaust manifold or pipe to the specified torque to prevent leaks or sensor damage.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards. The 350-64020 part undergoes rigorous testing to ensure durability and accurate sensor output. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability.