Walker 250-25016 Oxygen Sensor - Upstream

Overview of Walker 250-25016 Oxygen Sensor for BMW Vehicles

The Walker 250-25016 oxygen sensor is designed specifically for select BMW models including the 325Ci, 325i, 330Ci, 330i, 525i, 530i, and X3. This heated oxygen sensor provides accurate emissions data to help maintain optimal engine performance and fuel efficiency.

• Heated sensor type for faster response times
• Specific fit for BMW 325Ci, 325i, 330Ci, 330i, 525i, 530i, and X3 models
• 36.93-inch wiring harness length for flexible installation
• 20 gauge wire measurement with 5 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 40.47 inches for proper fitment

Walker Products OE Brand Line Details

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts designed to meet or exceed factory specifications. The Walker Products OE line ensures compatibility and durability, making it a suitable replacement part for maintaining the emission control systems of BMW vehicles.

Product Description and Technical Specifications

The Walker 250-25016 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving emissions monitoring accuracy shortly after engine start. The sensor includes a 36.93-inch wiring harness with 5 wires of 20 gauge thickness, ensuring stable electrical signals. Its radiused polygon male connector provides a secure and precise fit, while the threaded mounting type with an 18.0 mm diameter allows for straightforward installation. The overall length of 40.47 inches accommodates the specific routing requirements of the compatible BMW models.

Common Applications and Issues Addressed

• Helps reduce harmful emissions by accurately measuring oxygen levels in exhaust gases
• Improves fuel efficiency by providing precise data to the engine control unit
• Resolves engine performance issues related to faulty oxygen sensors
• Prevents check engine light triggers caused by sensor malfunctions
• Supports proper catalytic converter function by maintaining correct air-fuel mixture

Installation Notes and Tips

When installing the Walker 250-25016 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 shape and gender match 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 without over-tightening.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 250-25016 may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.