What’s the Difference Between an Idler Pulley and a Tensioner Pulley?
The idler pulley guides the serpentine belt or alternator belt and maintains alignment around different engine pulleys, while the belt tensioner pulley applies and adjusts belt tension to prevent slippage.
Note: A bad tensioner pulley can also cause a chirping or squealing noise from your car.
Pulley 88440-12170 for Toyota
Factory Number: ML-XY-5PK-01Series: PulleyName: PulleyOEM:
What’s the Difference Between an Idler Pulley and a Tensioner Pulley?
The idler pulley guides the serpentine belt or alternator belt and maintains alignment around different engine pulleys, while the belt tensioner pulley applies and adjusts belt tension to prevent slippage.
Note: A bad tensioner pulley can also cause a chirping or squealing noise from your car.
Pulley 88440-12170 for Toyota
Factory Number: ML-XY-5PK-01Series: PulleyName: PulleyOEM:
