The Dayco Top Cogged Accessory Drive Belt is designed to provide superior performance and reliability. This belt is constructed with three plies of neoprene-impregnated fabric that resist heat, oil and grease and a specially formulated treatment of the polyester cord that provides strength, stability and reliability. The cogged design improves circulation around the belt, which makes it operate cooler and longer. It meets or exceeds SAE J636 and SAE J637 specifications, providing greater flexibility and durability. FleetPride is your First Click in Heavy Duty®.