This parabolic viscous fan gives optimised aerodynamics and increased airflow for the same power consumption. The special feature of the NEW „FANS TURN“ is is its bi-directional airflow capability. This works by simply turning the impeller on the shaft at the same time reversing the polarity of the electrical connection to the engine. Therefore, it can be used for positive and negative earth vehicles. The turning fan is shipped with factory setting „suction“. Available for 6 and 12 volt applications.