Walker 250-54074 Oxygen Sensor - Upstream Left, Upstream Rear or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-54074

The Walker Products OE Oxygen Sensor 250-54074 is designed specifically for select Subaru and Toyota models, including the Camry, Legacy, Outback, and Tribeca. 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 Subaru and Toyota vehicles
• Threaded mounting type with 18.0 mm thread diameter
• 5.43-inch wiring harness length with 4 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 8.98 inches for proper installation

Detailed Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving emissions control efficiency. The 4-wire configuration supports both sensor signal and heater circuit, ensuring reliable performance. The wiring harness length of 5.43 inches and 20 gauge wire size provide durability and ease of routing within the engine bay. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system. The radiused polygon male connector is designed for a precise and stable electrical connection, reducing the risk of disconnection or signal loss.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is engineered to provide consistent performance and durability, matching the standards expected by Subaru and Toyota manufacturers. Using a Walker Products OE sensor helps maintain factory-level emissions control and engine efficiency.

Applications and Common Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel economy
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring proper combustion
• Prevents rough idling and engine hesitation caused by faulty sensors
• Supports optimal catalytic converter function by providing correct sensor data

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Use the correct 18.0 mm socket for removal and installation. Verify the connector type matches the vehicle harness to avoid electrical issues. Avoid twisting or stretching the wiring harness during installation to maintain sensor integrity. Follow vehicle-specific torque specifications to secure the sensor properly.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure reliability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.