Compatible Interchange Part Numbers: 3M5H18B647AC, 3M5H18B647AD, 1253185, 1325972 This fan speed control unit is designed to deliver precise and reliable regulation of your vehicle's HVAC fan, ensuring comfort and efficiency in all driving conditions. Built with durable, grade materials, it provides longlasting performance and consistent operation, even under demanding use. Key Benefits: Accurate fan speed control for stable cabin airflow. Compatible with the listed OEM part numbers for trusted fit and function. Robust construction ensures resistance to wear and temperature variations. Straightforward installation for those experienced in basic automotive repairs. Practical Applications: Restoring proper blower operation in vehicles where the fan runs inconsistently or fails to adjust speed. Replacing worn or faulty fan control modules to maintain heating and cooling performance. Preventing further damage to the HVAC system caused by defective speed regulation components. Ideal for vehicle owners seeking a dependable replacement part that matches original equipment specifications. Designed for easy integration with applicable models, this unit offers reliable performance and supports continued comfort and safety within your car's interior climate control system.