Walker 250-25051 Oxygen Sensor - Upstream or Upstream Left

Overview of Walker 250-25051 Oxygen Sensor for Audi, Porsche, Volkswagen

The Walker 250-25051 oxygen sensor is designed specifically for select Audi, Porsche, and Volkswagen models, including the A8 Quattro, Cayenne, Panamera, and Touareg. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for Audi A8 Quattro, Porsche Cayenne, Panamera, and Volkswagen Touareg
• 59.57-inch wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 63.11 inches for proper fitment

Walker Products OE Line and Part Specifications

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality and fitment. The OE line ensures that each sensor meets or exceeds factory specifications, providing a direct replacement for the original sensor installed in your vehicle. The 250-25051 model features a heated sensor type that improves warm-up time and emissions accuracy, critical for maintaining compliance with emission standards.

Detailed Product Description and Attributes

The Walker 250-25051 oxygen sensor includes a 5-wire design with a 20-gauge wire measurement, supporting efficient and accurate signal transmission. The wiring harness length of 59.57 inches and overall length of 63.11 inches provide ample reach for installation in the engine bay. The sensor mounts via a threaded connection with an 18.0 mm diameter, ensuring a secure and leak-free fit. The radiused polygon male connector is designed for a precise and reliable electrical connection, reducing the risk of disconnection or corrosion over time.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for Audi A8 Quattro, Porsche Cayenne, Panamera, and Volkswagen Touareg
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions and prevents check engine light triggers
• Improves fuel efficiency by providing correct sensor data to the engine control unit
• Supports compliance with emission control regulations

Installation Notes and Tips

When installing the Walker 250-25051 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly route the wiring harness to prevent contact with hot or moving parts. Torque the sensor to manufacturer specifications to ensure a secure fit and prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details for part number 250-25051 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship. This oxygen sensor is engineered to maintain emission control system integrity and support long-term vehicle operation.