A pulley can be ribbed or smooth and contains a sealed ball-bearing. The idler pulley is used to divert the drive belt to components such as the alternator water pump or power steering pump. Accessory Drive Belt Idler Pulley.
ACDelco 38190 Accessory Drive Belt Tensioner Assembly
ACDelco 38172 Accessory Drive Belt Tensioner Assembly
ACDelco 12563084 Accessory Drive Belt Tensioner Assembly
Acdelco 38495 Accessory Drive Belt Tensioner Assembly
ACDelco 38260 Accessory Drive Belt Tensioner Assembly
ACDelco 38018 Accessory Drive Belt Pulley
