Walker 250-25106 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-25106

The Walker Products OE Oxygen Sensor 250-25106 is designed specifically for select BMW and Mini models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for BMW and Mini models including 135i, 335i, 535i, Cooper, X3, and more
• Threaded mounting with 18.0 mm thread diameter
• 27.09-inch wiring harness length with 5 wires of 20 gauge
• Radiused polygon male connector for reliable electrical connection
• Overall length of 30.63 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25106) is engineered to meet the exact specifications of various BMW and Mini vehicles, including models such as the 135i, 335i xDrive, 640i Gran Coupe, and Cooper Countryman. The sensor is heated to provide faster response times and improved fuel efficiency. It features a 5-wire configuration with 20 gauge wiring, ensuring durability and consistent signal transmission. The radiused polygon male connector and threaded mounting type with an 18.0 mm diameter allow for secure and precise installation, maintaining the integrity of the vehicle’s emission control system.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering original equipment quality parts designed to meet or exceed factory standards. This oxygen sensor is part of that line, providing a direct replacement that maintains the performance and reliability expected from the original sensor installed in BMW and Mini vehicles. The OE designation ensures compatibility and fitment accuracy, reducing installation time and potential issues.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for engine control units
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring accurate oxygen level detection
• Prevents check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and drivability

Installation Notes and Tips

When installing the Walker Products OE oxygen sensor 250-25106, 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 matches the radiused polygon male shape for a secure fit. Properly route the 27.09-inch wiring harness to avoid contact with hot or moving parts. Follow vehicle-specific torque specifications to avoid damage.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms related to part number 250-25106.