Walker 250-24994 Oxygen Sensor - Downstream or Downstream Right

Overview of Walker 250-24994 Oxygen Sensor

The Walker 250-24994 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, Bora, Q5, Q5 Sportback, and Q7. This heated oxygen sensor provides precise emissions control by monitoring exhaust gases and ensuring optimal engine performance.

• Heated oxygen sensor with 4-wire configuration for accurate readings
• Threaded mounting type with an 18.0 mm thread diameter for secure installation
• 25.12-inch wiring harness length and 20-gauge wire for reliable connectivity
• Radiused polygon male connector designed for specific vehicle fitment
• Overall length of 28.66 inches to accommodate OEM specifications

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering emission control components that meet original equipment specifications. The 250-24994 oxygen sensor is engineered to match the exact fit and function required by Audi and Volkswagen vehicles, ensuring compatibility and performance consistent with factory standards.

Product Features and Specifications

This oxygen sensor features a heated sensor type that allows for faster warm-up times and improved fuel efficiency. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, enhancing sensor responsiveness. The radiused polygon male connector ensures a secure and 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 models without modification.

Common Applications and Problem Resolution

• Helps correct engine misfires caused by faulty oxygen sensor readings
• Reduces increased emissions due to sensor degradation
• Improves fuel economy by providing accurate air-fuel mixture data
• Prevents check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter function by monitoring exhaust gases

Installation Notes and Tips

Installation requires removing the old oxygen sensor and threading the Walker 250-24994 sensor into the exhaust manifold or pipe. Ensure the connector matches the vehicle’s wiring harness to avoid electrical issues. Use anti-seize compound on the threads if recommended by the vehicle manufacturer. Verify sensor wiring and connector orientation before finalizing installation to maintain proper sensor function.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. This ensures reliable operation and peace of mind when replacing oxygen sensors on compatible Audi and Volkswagen models.