This belt tensioner provides the belt a smooth surface to spin across while providing the proper amount of tension. As the bearings in the pulley wear, you may begin to experience a high pitch squeaking or squealing. Over time this may result in complete bearing failure, causing the pulley to lock up and break the belt.

NOTE: Whenever idler or tensioner pulleys are replaced due to failure, it is important to carefully inspect the belt for excessive wear.

Fits:

• 2019-2024 Nissan Altima (KR20DDET 2.0L equipped)