The Dayco 71999 Radiator Coolant Hose is a genuine replacement part designed for direct fitment in vehicles. Made of EPDM material, this black hose has an inside diameter of 1 7/16 inches and an outside diameter of 1 13/16 inches. It comes in a length of 27 inches and is suitable for placement on the belts cooling system of the vehicle. With various interchange part numbers including Gates, Ford, Duralast, and Motorcraft, this branched hose meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications. Perfect for reliable engine cooling, this Dayco Radiator Coolant Hose is a quality product from a trusted brand.