Walker 250-54086 Oxygen Sensor - Upstream or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-54086

The Walker Products OE Oxygen Sensor 250-54086 is designed specifically for select Subaru and Toyota models, including the Legacy, Outback, and Sienna. 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 Legacy, Outback, and Toyota Sienna
• 6.42-inch wiring harness length for proper installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Overall length of 9.96 inches for compatibility
• 20 gauge wire measurement for durability and signal integrity

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications of your vehicle’s original equipment. The 4-wire heated sensor design allows for faster warm-up times, improving emissions control during cold starts. The 6.42-inch wiring harness length and radiused polygon male connector ensure a precise and secure fit, reducing the risk of electrical issues. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory standards. The sensor’s 20 gauge wires provide reliable signal transmission, supporting accurate engine management and fuel efficiency.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the following makes and models:

• Subaru Legacy
• Subaru Outback
• Toyota Sienna

It is designed for specific fitment, ensuring proper function and ease of installation on these vehicles.

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, providing reliable emissions control components designed to maintain your vehicle’s performance and compliance with emissions standards.

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine hesitation or rough idling caused by sensor malfunction
• Reduced engine performance and drivability issues

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools for threaded sensor removal and installation
• Verify connector type matches the vehicle harness (radiused polygon male connector)
• Check wiring harness length (6.42 inches) for proper routing and fit
• Apply anti-seize compound on threads if recommended by vehicle manufacturer

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. The 250-54086 part number undergoes rigorous testing to ensure compatibility and reliability. Warranty coverage details should be confirmed with the product documentation or supplier.