Dayco 89346 Automatic Tensioner Assembly

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Automatic Belt Tensioner Designed to maintain constant tension on serpentine belt drives To maintain the proper tension throughout the drive, an automatic, spring-loaded tensioner is incorporated into the drive system geometry. This reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed. It also lessens the risk of belt squeal and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. Show more