Walker 350-64047 Oxygen Sensor - Upstream

Overview of Walker 350-64047 Oxygen Sensor for Subaru and Toyota

The Walker 350-64047 oxygen sensor is designed specifically for select Subaru and Toyota models, including the Hilux and Legacy. 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 configuration
• Specific fit for Subaru Hilux and Toyota Legacy
• 21.18-inch wiring harness length for proper installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for durability and signal integrity
• Overall length of 24.72 inches for compatibility with factory locations

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-64047) is engineered to meet the exact specifications required by Subaru and Toyota vehicles such as the Hilux and Legacy. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which helps maintain efficient combustion and reduce harmful emissions. The sensor’s 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring reliable performance and faster response times.

The sensor’s wiring harness length of 21.18 inches and overall length of 24.72 inches are designed to fit factory mounting points without modification. Its 18.0 mm threaded mounting type allows for straightforward installation, while the radiused polygon male connector ensures a secure and precise electrical connection. The 20-gauge wire measurement supports durability and consistent signal transmission under various operating conditions.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps resolve check engine light triggers related to oxygen sensor faults
• Reduces emissions by ensuring proper catalytic converter function
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports compliance with emissions regulations for Subaru Hilux and Toyota Legacy

Installation Notes and Tips

• Ensure vehicle compatibility with Subaru Hilux or Toyota Legacy before installation
• Use proper tools to avoid damaging the 18.0 mm threaded sensor mount
• Verify connector orientation matches the radiused polygon male connector for secure fit
• Inspect wiring harness length (21.18 inches) to confirm routing without tension or interference
• Allow the sensor to reach operating temperature for accurate diagnostics after installation

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 350-64047 oxygen sensor undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Subaru and Toyota vehicles.