The Dayco Poly Rib Belt is designed for power transmission on multiple-accessory drives. This Poly Rib belt is the latest version of the revolutionary multi-ribbed belt first developed by Dayco for the 1979 Ford Mustang. The Dayco Poly Rib belt meets or exceeds SAE J1459 and SAE J2432 specifications. This Poly Rib belt is another Dayco product proudly made in the USA.