Walker 250-25064 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker 250-25064 Oxygen Sensor for Audi Vehicles

The Walker 250-25064 oxygen sensor is designed specifically for select Audi models, including the A8 Quattro, S4, and S5. This heated oxygen sensor provides accurate emissions control by monitoring exhaust gases and ensuring optimal engine performance.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for Audi A8 Quattro, S4, and S5 models
• Threaded mounting type with 18.0 mm thread diameter
• 29.65-inch wiring harness length with 20 gauge wire
• Radiused polygon male connector for secure connection
• Overall length of 33.19 inches for proper installation

Detailed Features and Specifications

This Walker oxygen sensor (part number 250-25064) features a heated sensor type that allows for faster warm-up times and improved emissions monitoring. The sensor includes a 5-wire setup with 20 gauge wiring, ensuring reliable electrical performance. Its 29.65-inch wiring harness length and 33.19-inch overall length provide sufficient reach for installation in the exhaust system of compatible Audi vehicles. The sensor mounts via a threaded connection with an 18.0 mm thread diameter, and the radiused polygon male connector ensures a secure and precise fit.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. This oxygen sensor is part of the Walker Products OE range, which emphasizes precise fitment and reliable performance for emission control components. Using parts from this line helps maintain the integrity of your vehicle's emissions system and supports compliance with environmental standards.

Applications and Common Issues Addressed

• Restores accurate oxygen sensing for Audi A8 Quattro, S4, and S5
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring proper air-fuel mixture monitoring
• Prevents check engine light triggers caused by sensor failure
• Improves fuel efficiency by providing correct exhaust gas data

Installation Notes and Tips

When installing the Walker 250-25064 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use appropriate anti-seize compound on the threads to prevent seizing during future removal. Verify the radiused polygon male connector aligns correctly with the vehicle’s wiring harness to avoid connection issues. It is recommended to disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and accuracy. The 250-25064 part is backed by Walker’s quality assurance protocols, providing confidence in its performance and longevity. Please refer to Walker’s official documentation for specific warranty details.