Walker 250-25111 Oxygen Sensor - Upstream

Overview of Walker 250-25111 Oxygen Sensor for Audi A8 Quattro

The Walker Products OE 250-25111 oxygen sensor is designed specifically for the Audi A8 Quattro, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Audi A8 Quattro models
• 33.07-inch wiring harness length for flexible placement
• 20-gauge wire with 5-wire quantity for reliable signal transmission
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Overall length of 35.43 inches for proper fitment

Detailed Features and Specifications

This Walker 250-25111 oxygen sensor is engineered with a heated sensor type to provide faster response times and improved fuel efficiency. The 33.07-inch wiring harness length allows for convenient routing within the engine bay, while the 20-gauge wire ensures durability and consistent electrical performance. Featuring five wires, this sensor supports comprehensive signal communication for accurate oxygen level readings. The radiused polygon male connector is designed to fit securely with the vehicle’s wiring harness, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and a tight seal to prevent exhaust leaks.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor from the Walker Products OE series is manufactured to provide reliable performance and durability, matching the standards expected by Audi for the A8 Quattro. Using parts from this line helps maintain the vehicle’s emission system integrity and overall engine management.

Common Applications and Problem Resolution

• Restores accurate oxygen level readings for proper air-fuel mixture
• Helps resolve check engine light issues related to oxygen sensor faults
• Improves fuel economy by ensuring efficient combustion
• Reduces harmful emissions by maintaining proper sensor function
• Prevents engine performance problems caused by faulty sensor signals

Installation Notes and Tips

When installing the Walker 250-25111 oxygen sensor, ensure the threaded mounting hole is clean and free of debris to achieve a proper seal. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to facilitate future removal. Verify the connector shape and gender match the vehicle’s wiring harness to avoid connection issues. Route the wiring harness carefully to prevent contact with hot or moving engine components.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable operation and longevity. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emission regulations and supports the proper functioning of the Audi A8 Quattro’s engine management system.