Overrunning Alternator Pulleys

With the ever-increasing number of accessories and auxiliary systems that require extra electrical power in modern cars, Overrunning Alternator Pulleys (OAPS) are becoming increasingly popular on many late-model vehicles to deal with increased alternator loads and engine torsional fluctuations.

Dayco Australia offers the aftermarket the premium quality Nuline range of Overrunning Alternator Pulleys (OAPS). Dayco’s broad range consists of 114 part numbers covering 32 current vehicle manufacturers from Alfa Romeo to Volvo.

Auxiliary systems such as power seats, heated and cooled seats, GPS navigation systems, electric power steering systems, onboard entertainment systems and more all place increased strain on Alternators, front end accessory drives and drive belts unless managed effectively by quality Overrunning Alternator Pulleys (OAPS). Dayco OAPs allow the alternator to ‘freewheel’ when the belt speed drops and are engineered with one-way clutches that allows the rotational inertia of the alternator to “overrun” during any belt deceleration.

Dayco OAPs, which are designed for long service life, decrease drive belt vibration and reduce belt slippage during rapid acceleration or deceleration, resulting in reduced stress on the drive belt and other accessories as well as increased alternator and drive belt life. All Dayco OAP Pulleys are supplied with a new protective dust cap to maximise product life.

Note: Overrunning Alternator Pulleys require special tools for removal and fitment, Nuline have the necessary tools available. Download the Dayco OAP Catalogue range

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