Walker 250-54057 Oxygen Sensor - Upstream Front or Upstream Rear

Overview of Walker 250-54057 Oxygen Sensor for Lexus and Toyota

The Walker 250-54057 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Avalon, Camry, ES300, Sienna, and Solara. This heated oxygen sensor provides accurate emissions control data to optimize engine performance and fuel efficiency.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota vehicles
• 10.35-inch wiring harness length for precise installation
• 20 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 13.9 inches for proper fitment

Detailed Features and Specifications

This oxygen sensor from Walker Products OE is engineered with a heated sensor element to ensure quicker warm-up and accurate oxygen level readings under various operating conditions. The 10.35-inch wiring harness length and 20 gauge wire size with four wires support stable electrical signals and compatibility with the vehicle’s engine control unit. The radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter provide a secure and precise fit, reducing the risk of leaks or sensor failure. The overall length of 13.9 inches is designed to match the OEM specifications for the listed Lexus and Toyota models.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet original equipment specifications. This ensures that the 250-54057 oxygen sensor maintains the performance and durability standards expected by vehicle manufacturers. Using parts from the Walker Products OE line helps maintain proper emissions control and engine efficiency in compatible Lexus and Toyota vehicles.

Common Applications and Problem Resolution

• Restores accurate air-fuel mixture readings for improved fuel economy
• Resolves check engine light issues related to oxygen sensor faults
• Helps reduce harmful emissions by providing precise feedback to the engine control module
• Prevents engine performance problems caused by faulty sensor signals
• Supports smooth engine idling and acceleration in Lexus Avalon, Toyota Camry, and other compatible models

Installation Notes and Tips

Installation requires removal of the old oxygen sensor and threading the Walker 250-54057 sensor into the exhaust manifold or pipe. Ensure the connector matches the radiused polygon male type for proper electrical connection. Use appropriate tools to avoid damaging the 18.0 mm threaded mounting. Verify wiring harness length and routing to prevent strain or interference with other components.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and OEM specifications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports reliable vehicle operation.