Walker 250-25008 Oxygen Sensor - Upstream, Upstream Front or Upstream Left

Overview of Walker Products OE Oxygen Sensor 250-25008

The Walker Products OE Oxygen Sensor 250-25008 is designed for precise emission control in select Audi, Bentley, Porsche, and Volkswagen vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for models including Audi A4, A8 Quattro, Volkswagen Beetle, Porsche Cayenne, and more
• 56.61 inches wiring harness length with 5 wires of 20 gauge
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Overall length of 60.16 inches for proper installation

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications required by various European and German automotive manufacturers. The heated sensor element allows for quicker activation, reducing the time the engine runs in open loop mode. With a 5-wire configuration and 20 gauge wire, the sensor provides reliable signal transmission and durability. The radiused polygon male connector ensures a precise and secure fit, minimizing the risk of connection issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in compatible exhaust systems.

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 250-25008 is part of that line, ensuring compatibility and performance for specific vehicle applications. The OE line emphasizes precise fitment and reliable operation, making it suitable for emission control systems in Audi, Bentley, Porsche, and Volkswagen models.

Compatible Vehicles and Common Applications

• Audi A4 and A4 Quattro
• Audi A8 Quattro
• Bentley Continental
• Porsche Cayenne and 911 models
• Volkswagen Beetle, EuroVan, R32, Touareg, TT, and TT Quattro

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor failure
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

• Ensure the vehicle is cooled down before sensor replacement
• Use appropriate tools for the 18.0 mm threaded mounting
• Verify connector type matches the vehicle harness (radiused polygon male)
• Handle wiring harness carefully to avoid damage to the 5-wire assembly
• Follow vehicle-specific service manual instructions for sensor location and torque specifications

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards for durability and performance. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.