Dayco Flexible Heavy Duty Radiator HoseDesigned to replace molded curved radiator hose when routing allows. Daycos Gold Label Heavy Duty Flex Radiator Hose is hand-built with synthetic EPDM and heavy duty fabric and wire reinforcement for high burst strength and collapse resistance. The ribbing provides excellent flexibility and kink resistance. This heavy duty construction stands up to the effects of ozone and other detrimental environmental elements, coolants, coolant additives, and temperature variations of -40F (-40C) to +212F (+100C). The hose's construction meets or exceeds SAE J20R5, Class C requirements for heavy duty applications. Note: NOT suitable for fuel or oil transfer.