Walker 250-24953 Oxygen Sensor - Center, Downstream Left or Upstream

Overview of Walker Products OE Oxygen Sensor 250-24953

The Walker Products OE Oxygen Sensor 250-24953 is designed specifically for select Audi and Volkswagen models, including the A4, A4 Quattro, A6, A6 Quattro, Bora, and Polo. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Audi and Volkswagen vehicles
• 21.18-inch wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 24.72 inches

Detailed Product Features and Specifications

This oxygen sensor from Walker Products OE features a heated sensor type that allows for faster warm-up times and improved emissions monitoring. The 4-wire design includes two wires for the heating element and two for the sensor signal, ensuring accurate and stable readings. The wiring harness length of 21.18 inches provides sufficient reach for installation in the exhaust system of compatible Audi and Volkswagen models. The sensor mounts via a threaded connection with an 18.0 mm diameter, a common size for these vehicles. The radiused polygon male connector ensures a secure and precise fit, reducing the risk of connection issues. With a wire gauge of 20, the sensor maintains signal integrity under various operating conditions.

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 engineered to match the exact fit and function required by Audi and Volkswagen vehicles, supporting proper emissions control and engine management systems. Choosing a Walker Products OE sensor helps maintain vehicle performance and compliance with emissions standards.

Applications and Common Issues Addressed

• Restores accurate air-fuel ratio readings for engine control units
• Helps resolve rough idling and poor fuel economy caused by faulty sensors
• Reduces emissions by ensuring proper catalytic converter operation
• Eliminates check engine light triggers related to oxygen sensor faults
• Prevents drivability problems linked to incorrect sensor data

Installation Notes and Tips

Installation requires removing the old oxygen sensor and threading the new sensor into the exhaust manifold or pipe. The 18.0 mm threaded mounting type is compatible with factory sensor ports on the specified Audi and Volkswagen models. Ensure the radiused polygon male connector is securely attached to the vehicle wiring harness. Avoid damaging the wiring harness during installation and verify the sensor wiring matches the vehicle’s connector configuration. It is recommended to use anti-seize compound on the threads to facilitate future removal.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. This part number 250-24953 undergoes rigorous testing to comply with OEM specifications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Audi and Volkswagen vehicles.