Dayco Accessory Drive Belt Idler Pulley

The Dayco Accessory Drive Belt Idler Pulley is a replacement idler pulley (also called a drive belt idler or serpentine belt idler pulley). It guides the belt and keeps it correctly routed through the accessory drive system. Idler pulleys help the belt keep proper contact with the alternator, power steering pump, water pump, and air conditioning compressor. Depending on the application, they can also work with a tensioner to keep belt tension steady.

Key Features:

• Made by Dayco, a long-established supplier of belts, tensioners, pulleys, and other engine accessory drive parts
• Designed to replace the original idler pulley so the belt runs smoothly and stays aligned
• Built with a bearing-supported pulley for smooth rotation
• Helps cut belt noise, vibration, and uneven belt wear
• Available in multiple configurations, so you can choose the one that matches your application

A worn idler pulley can cause squealing, chirping, a wobbling belt, or early belt failure. Replacing it along with the drive belt helps keep the accessory drive reliable. Check the individual product listings for the specifications of each version.