Compatible with: Ford Expedition 2017-2009 Ford F-150 2014-2009 Lincoln Navigator 2017-2009 Package Includes: 1 x Blower motor fan The function of the blower: The blower is part of your car's air conditioning system. Adjusting the fan speed sends a signal through the resistor to the blower motor to speed up or slow down. How to know if your blower motor needs to be replaced: No or little airflow. Making unusual noises, rattling or squealing. There is a strange smell. Attention: *Professional Installation is Highly Recommended. .
