This is a genuine AC Delco OEM multi-ribbed belt for GM vehicles. It comes in its original packaging and costs a lot less than buying it from an auto parts store. I will be buying another one for my truck in the next 100,000 miles or so. These AC Delco OEM belts last much longer than the cheaper ones. The one I removed was still good but I replaced it anyway since I removed it to replace the power steering pump.