Each car is equipped with a radiator fan, designed to improve the cooling fluids circulation. It is achieved by increasing the quantity and speed of air passing directly through the radiator. The fan is usually installed between the radiator and the engine in a special box. The radiator fan connects four or more blades, located on a common pulley. In order to increase the airflow, the blades are arranged at a certain angle to the plane of rotation.

Radiator fans have different types of drive: mechanical, electrical, and hydromechanical. The most common is considered the electrical radiator fan drive. The drive turns on the motor and the control system. The electrical motor is powered from the onboard network of any vehicle. The control system coordinates the fan performance depending on engine temperature.

Usually the electrical devices are not demountable. Despite the fact that theoretically the part can be repaired, to restore it is quite expensive and not very reasonable.