This Motorcraft serpentine belt is a high-quality replacement part for Ford F650 and F750 trucks. It has 8 ribs and fits perfectly with the OE/OEM part number 4C4Z8620CA. The belt is made in the United States and comes with interchange part numbers 8PK1912, 5080755, and 3579133C1. The belt is designed for use in a variety of Ford trucks and is not a universal fitment. This is a genuine Motorcraft part and not a performance or vintage part. Use this belt to ensure reliable and efficient operation of your vehicle. Exact item is shown. New old stock item with original packaging. Majority content made in USA. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.