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The alternator decoupler pulley uses a one-way clutch mechanism to absorb belt load fluctuations and reduce wear on the belt drive system, particularly at idle and during deceleration. Signs of failure include: a chirping or rattling noise from the alternator area, accessory belt wear that seems premature, or a pulley that spins freely in both directions when it should only freewheel in one. Replace it to protect your belt and restore smooth drive system operation.
Dayco is a global leader in belt and hose technology, supplying OE components to major manufacturers worldwide. Known for innovative designs, superior materials, and exceptional durability, Dayco serpentine belts, timing belts, and cooling system hoses deliver reliable performance and extended service life.
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