This adjustable idler pulley is a perfect fit for your 65-66 Ford Mustang 289 integral AC. It is designed to provide reliable and efficient performance for your vehicle's accessory belt system. The pulley is made of high-quality materials and is built to last, ensuring that you get the most out of your belt.

Whether you're replacing a worn-out idler pulley or upgrading your vehicle for better performance, this adjustable idler pulley is the perfect choice. It is easy to install and provides a reliable grip for your accessory belt. Order now and experience the difference for yourself!