Walker 250-25002 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-25002

The Walker Products OE 250-25002 oxygen sensor is designed for specific vehicle applications including Audi, BMW, Buick, and Volkswagen models. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fit and reliable performance in emission control systems.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for Audi 545i, BMW 645Ci, 745i, 745Li, Volkswagen A8 Quattro, Allroad Quattro, Touareg, and more
• Threaded mounting with 18.0 mm thread diameter
• Connector with radiused polygon shape and male gender
• Wiring harness length of 21.18 inches and overall length of 24.72 inches
• Wire gauge measurement of 20 for optimal electrical performance

Detailed Product Features and Specifications

This oxygen sensor from Walker Products OE is engineered with a heated sensor type to provide faster response times and improved fuel efficiency. The 5-wire design supports accurate signal transmission, while the 20-gauge wiring ensures durability and resistance to electrical interference. The sensor’s threaded mounting type with an 18.0 mm diameter allows for secure installation in compatible exhaust systems. The radiused polygon male connector is designed for a specific fit, reducing the risk of connection issues during installation.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed manufacturer specifications. This oxygen sensor is part of that line, ensuring compatibility and performance for vehicles such as the BMW 545i and Volkswagen Touareg. The OE designation indicates that this sensor is designed to match the exact fit and function of the original sensor installed by the vehicle manufacturer.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Audi, BMW, Buick, and Volkswagen vehicles
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Reduces emissions by providing accurate oxygen level data to the engine control unit
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel economy by maintaining proper combustion efficiency

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and install the Walker 250-25002 sensor securely by threading it into place. Verify the connector matches the radiused polygon male shape for proper connection. Avoid damaging the wiring harness during installation and confirm the sensor wiring length of 21.18 inches is sufficient for your vehicle’s routing requirements.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 250-25002 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to ensure reliable operation in emission control systems.