This premium quality hose is made in USA. 1" ID (25.4 mm) Insulone Heater Hose - 3 feet length (36"). 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˚F (-40˚C) to +257˚F (+125˚C).
eBay