The product is a genuine OEM Ford F-150 9.75" rear differential pinion bearing race with the part number F75Z4628AA. Made in the United States, this high-quality bearing is designed specifically for the rear, inner placement on vehicles. It is important to note that this product may contain chemicals known to cause cancer and reproductive harm, as indicated by the California Prop 65 Warning. This product is a reliable and essential component for maintaining the proper functionality of your Ford F-150's differential system.