The serpentine belt tensioner applies pressure to the serpentine belt, maintaining ideal tension to drive the accessories like the alternator and A/C compressor. The service life of the belt tensioner is the same as the belt itself, so they should always be replaced together. A worn tensioner prevents the accessories from spinning properly, leading to premature wear and noise.

Your automobile manufacturer has a recommended mileage interval for serpentine belt replacement. A complete accessory drive system service replaces the serpentine belt, the belt tensioner and any idler pulleys your auto might have. Your honest AACCEL EMISSIONS & LUBE technician can review your system and let you know if it’s time for a replacement.

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3500 Mall Loop Drive
Joliet, IL. 60431