The Ford Motor Company, General Motors, and Isuzu 1990 through 2004 Idler Pulley is a reliable and efficient accessory drive belt idler pulley. With a maximum belt width of 20mm and a pulley bearing inside diameter of 17mm, this pulley is designed to restore performance and fix any failed, squealing, or groaning noises caused by a worn idler pulley. It is a direct replacement for the original equipment pulley on specified vehicles and is application-specific for certain years, makes, and models. Made with high-quality polyamide 6.6 with 30% glass fiber fill pulley construction material, this pulley is built to last. It fits most Chevrolet, Ford, GMC, Isuzu, and Workhorse 1990-2004 models with various engine types. Trust this idler pulley to provide a perfect fit and reliable performance.