Dayco’s innovative tensioner design allows for longer product life and overall quieter performance. To maintain constant tension on serpentine belt drives, the Dayco automotive belt tensioner features our original, patented flat spring design to provide less operating range variation. It reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed and lessens the risk of belt noise and slippage – or poor performance caused by low tension.
Service Tip: Always replace belts and tensioners together. Old tensioners will reduce a belt's lifespan, and can lead to issues such as overheating, a dead battery, diminished power steering, or poor air conditioning performance.