Walker 250-25039 Oxygen Sensor - Upstream Left or Upstream Right

Overview of Walker 250-25039 Oxygen Sensor

The Walker 250-25039 oxygen sensor is designed specifically for select Audi and Porsche models, including the Audi A8 Quattro and Porsche 911. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for Audi A8 Quattro and Porsche 911
• 26.1-inch wiring harness length for flexible installation
• 20 gauge wire measurement with 5 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 29.65 inches for proper fitment

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications required by Audi and Porsche vehicles. The heated sensor design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 5-wire configuration and 20 gauge wiring ensure consistent and accurate sensor signals. The radiused polygon male connector provides a secure and precise fit, minimizing the risk of connection issues. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory standards. The wiring harness length of 26.1 inches and overall length of 29.65 inches offer sufficient reach for proper placement within the exhaust system.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that match or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance for specific vehicle applications such as the Audi A8 Quattro and Porsche 911. The OE line emphasizes precise fitment and reliable operation, supporting emission control systems effectively.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control units
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring proper catalytic converter function
• Eliminates check engine light codes related to oxygen sensor faults
• Improves overall engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-25039 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer. Verify the radiused polygon male connector aligns correctly with the vehicle harness to avoid damage. The 26.1-inch wiring harness length provides flexibility, but avoid sharp bends or pinching during installation. Follow vehicle-specific torque specifications for sensor mounting.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards for durability and performance. This part number 250-25039 undergoes rigorous testing to ensure reliable operation in emission control systems. Warranty coverage details should be confirmed with the original product documentation or supplier.