Seat heating, air conditioning and other auxiliary facilities require additional electrical performance. For this reason, many vehicle manufacturers use heavier alternators that even more strain the belt performance during the delay. Thats why drive experts have developed the generator freewheel pulley, which, unlike the conventional rigid roller, allows the generators "freewheel" as soon as the engine brakes and absorbs vibrations. Almost every modern vehicle model is equipped with such a device. With the intake of the OEM quality Micro-V® Generator freewheel pulleys, Gates can now offer the automotive aftermarket all components for the complete refurbishment of the by-unit drive system.