Rein Coolant Hose Rein - CHE0320R: Rein Automotive coolant hoses are designed to transfer glycol-based coolants to and from the radiator as well as through other components in the vehicle's coolant system. This hose is made of EPDM rubber for resistance to weathering, ozone, and coolants. It is reinforced with knitted polyester fabric for maximum burst strength. Meets or exceeds SAE J20R4, Class D-2 requirements.