Walker 250-24440 Oxygen Sensor - Center or Downstream

Overview of Walker Products OE Oxygen Sensor 250-24440

The Walker Products OE Oxygen Sensor 250-24440 is designed for specific vehicle applications including Mazda, Saab, Scion, and Subaru models. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fit and reliable performance.

• Heated oxygen sensor with 4 wires for accurate readings
• Specific fit for Mazda CX-5, CX-9, Subaru Forester, Impreza, Legacy, Outback, Saab 9-2X, Scion FR-S, and Subaru Baja
• Thread diameter of 18.0 mm with threaded mounting for secure installation
• Connector features a radiused polygon shape with male gender
• Wiring harness length of 25.12 inches and overall length of 28.66 inches
• Wire gauge measurement of 20 for durability and signal integrity

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality emission control components. This oxygen sensor 250-24440 is engineered to meet or exceed OEM specifications, providing a direct replacement that maintains factory performance and emissions standards for compatible vehicles.

Detailed Product Description

This oxygen sensor is a heated type, which allows it to reach operating temperature quickly for improved fuel management and emissions control. The sensor includes four wires, supporting both the sensor signal and heater circuit. Its 18.0 mm threaded mounting ensures a secure fit in the exhaust system. The radiused polygon male connector is designed for a precise connection, reducing the risk of electrical issues. With a wiring harness length of 25.12 inches and an overall length of 28.66 inches, this sensor fits the specified vehicle models without modification.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for engine control units
• Helps resolve rough idling and poor fuel economy caused by faulty sensors
• Reduces emissions by ensuring proper air-fuel mixture adjustments
• Prevents check engine light triggers related to oxygen sensor faults
• Supports compliance with emissions testing requirements

Installation Notes and Tips

• Ensure the sensor thread diameter (18.0 mm) matches the vehicle’s exhaust port
• Use appropriate tools to avoid damaging the sensor or connector
• Verify connector shape and gender (radiused polygon, male) for compatibility
• Check wiring harness length (25.12 inches) to confirm fit without stretching
• Follow vehicle manufacturer torque specifications during installation

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and durability. The 250-24440 part number undergoes rigorous testing to comply with OEM requirements. Warranty coverage details should be confirmed with the product supplier or manufacturer.