Walker 250-54085 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-54085

The Walker Products OE Oxygen Sensor 250-54085 is designed specifically for select Lexus and Toyota models, including the GS350, GX460, IS250, Land Cruiser, LX570, Sequoia, Tacoma, and Tundra. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance through precise air-fuel mixture measurement.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota vehicles
• 4.45-inch wiring harness length with 20-gauge wire
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector with 4 wires
• Overall length of 7.99 inches for proper fitment

Detailed Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving emissions control and fuel efficiency. The 4-wire configuration supports both sensor heating and signal transmission, while the 20-gauge wire ensures durability and reliable electrical performance. The wiring harness length of 4.45 inches provides adequate reach for installation without excess slack. The sensor mounts via a threaded connection with an 18.0 mm diameter, compatible with the specified Lexus and Toyota models. The radiused polygon male connector ensures a secure and precise electrical connection, reducing the risk of signal loss or corrosion. With an overall length of 7.99 inches, this sensor fits correctly within the exhaust system for accurate readings.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with the original sensor installed on Lexus and Toyota vehicles. The OE designation indicates that this sensor is engineered to match the exact fit and function required by the vehicle manufacturer.

Applications and Common Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture readings
• Reduces engine performance issues related to faulty oxygen sensors
• Assists in passing emissions tests by maintaining proper exhaust gas monitoring
• Prevents check engine light triggers related to sensor malfunction
• Supports smooth engine idling and acceleration by providing accurate data

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. The threaded mounting requires proper torque to prevent exhaust leaks or sensor damage. Verify the connector shape and gender match the vehicle harness to ensure a secure connection. Handle the sensor carefully to avoid damaging the heating element or wiring. It is recommended to use anti-seize compound on the threads if not pre-applied to facilitate future removal.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine efficiency consistent with factory requirements.