Dayco Radiator Flex Hose. Designed for emergency alternative to moulded curved radiator hose. Precision moulded in standard lengths, Dayco's Flex Radiator Hose is designed to replace straight or moulded radiator hoses. The knitted reinforcement and synthetic EPDM construction preventing splitting, ballooning, and elongation, and resisting ozone and other detrimental environmental elements, coolants, and temperature variations of -40 Degree Celsius to 125 Degree Celsius. The corrugations, combined with the inserted helical steel coil spring, provide excellent hose flexibility without flattening or collapse. Note: NOT suitable for fuel or oil transfer.