Walker 250-25019 Oxygen Sensor - Upstream

Overview of Walker 250-25019 Oxygen Sensor for Audi A8 Quattro and S8

The Walker 250-25019 oxygen sensor is designed specifically for Audi A8 Quattro and S8 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Audi A8 Quattro and S8
• 18.23-inch wiring harness length for precise 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 21.77 inches for proper fitment

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-25019) is engineered with a heated sensor element to provide quicker warm-up times, improving emissions control during cold starts. The sensor includes a 5-wire configuration with 20 gauge wiring, ensuring accurate and stable signal output. Its 18.23-inch wiring harness length and radiused polygon male connector are designed for a secure and precise fit in the exhaust system of Audi A8 Quattro and S8 vehicles. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and reliable sealing.

Walker Products OE Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with the original sensor installed on Audi A8 Quattro and S8 models. Using Walker Products OE parts helps maintain vehicle emissions compliance and engine efficiency.

Applications and Problem Solving

• Restores accurate oxygen level readings for proper air-fuel mixture
• Helps resolve rough idling and engine hesitation issues
• Reduces emissions by ensuring correct catalytic converter operation
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by maintaining optimal combustion

Installation Notes and Tips

When installing the Walker 250-25019 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. Connect the radiused polygon male connector securely to avoid signal interruptions. Verify wiring harness routing to prevent contact with hot exhaust components or moving parts. Proper torque specifications should be followed to avoid sensor damage.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine management system integrity on Audi A8 Quattro and S8 vehicles.