Walker 250-25004 Oxygen Sensor - Upstream or Upstream Right

Overview of Walker Products OE Oxygen Sensor 250-25004

The Walker Products OE Oxygen Sensor 250-25004 is designed for precise emission control in select Audi, BMW, Porsche, and Volkswagen vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and emissions compliance.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for models including Audi A8 Quattro, BMW 325Ci, Porsche Cayenne, and Volkswagen Golf
• Threaded mounting type with 18.0 mm thread diameter
• 54.65 inches wiring harness length with radiused polygon male connector
• Wire gauge measurement of 20 for reliable electrical conductivity
• Overall length of 58.19 inches for proper installation depth

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25004) features a heated sensor element that allows for faster warm-up times and improved sensor response. The 5-wire design supports accurate signal transmission and heater control, essential for maintaining the correct air-fuel ratio in engines. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure and precise fit in the exhaust system. The wiring harness length of 54.65 inches and the radiused polygon male connector provide compatibility and ease of installation in specific vehicle models.

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is engineered to match the exact fit and function required by the vehicle manufacturers, making it suitable for emission control systems in Audi, BMW, Porsche, and Volkswagen vehicles.

Compatible Vehicles and Applications

• BMW 325Ci, 325i, 545i, 645Ci
• Audi A8 Quattro
• Porsche Cayenne
• Volkswagen Beetle, Golf, Jetta, Passat, TT Quattro

This oxygen sensor is designed specifically for these models to ensure proper engine management and emission control.

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 malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-25004, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent seizing. Verify the connector shape and wiring harness length match the vehicle’s original sensor to avoid electrical connection issues. Proper torque specifications should be followed to avoid damage to the sensor or exhaust components.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and OEM specifications. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. This ensures reliable performance and durability for emission control applications in compatible Audi, BMW, Porsche, and Volkswagen vehicles.