Suitable for automotive cooling systems. 3/8" ID (9.5 mm) Heater Hose by GATES. This hose is designed forcoolant only -- not for fuel, oil, or other non-coolant fluids. Built with a black cover, this hose is similar to SAE 20R3, Class D-2 with a temperature range of -40 degrees F (-40 degrees C) to +257 degrees F (+125 degrees C).
