Dayco 81251 Flex Hose 1-3/4X1-1/2X16 The knitted reinforcement and synthetic EPDM construction meets SAE J20R4, Class D-2 requirements Resists ozone and other detrimental environmental elements, coolants, and temperature variations of -40F (-40C) to +257F (+125C) The corrugations provide excellent hose flexibility without flattening or collapse This hose is designed to prevent splitting, ballooning, and elongation Limited Three Year Warranty