Introducing Tectran's EPDM Radiator & Coolant Hose - Engineered for Optimal Cooling Performance and Unmatched Durability Type: EPDM EC radiator and coolant hoses Standard: Meets SAE Standard 20R1 for Class D1 hoses Applications: Suitable for heavy-duty trucks, buses, off-road vehicles, and marine use Temperature Range: Recommended for temperatures -65DEGF to 350DEGF (-54DEGC to 177DEGC) Benefits: Longer life expectancy with low oil resistance Material Properties: EPDM composition offers flexibility, strength, and resistance to ozone, high temperatures, and chemicals Additional Features: Resists cold water leaks and electrochemical degradation