Keeping you Ready for the Road Ahead™, the Dorman Drive Belt Idler Pulley replacement successfully fixes a failed, groaning, or squealing noise from a worn or failed idler pulley. This idler pulley helps guide or maintain proper tension of the serpentine belt around various engine components, such as the alternator, water pump, and air conditioning compressor. This drive belt idler pulley ensures OEM function and performance of the original pulley for select make and models from 2010-2023. Restore vital vehicle operations with the Dorman Drive Belt Idler Pulley. Dorman has a distinguished reputation in the heavy duty truck and trailer aftermarket, manufacturing a variety of parts for a complete repair. Through advanced engineering, Dorman successfully checks into today’s most common failures to figure out the why, ultimately delivering modern solutions that not only match OEM parts, but solve known issues. FleetPride is your First Click in Heavy Duty®.