Upgrade your vehicle's performance with the Chevrolet, GMC, and Workhorse 2003 through 2006 Idler Pulley. This direct replacement pulley restores optimal function, eliminating squealing and groaning noises caused by a worn idler pulley. Crafted from durable steel Aisi 1008/1010 with a black finish, this pulley is designed for a 30mm maximum belt width and 25mm pulley bearing inside diameter. Application-specific for various Chevrolet, GMC, and Workhorse models, this pulley is a practical and essential component for maintaining your vehicle's performance. With direct OE replacement numbers, this pulley is a reliable choice for your vehicle's needs.