Our premium, heavy-duty Truck and Trailer Air Brake Hoses are used to power air brake lines from the tractor to the trailer. Available for standard use, our brake hoses (-40°F) stand up to constant vibration and most adverse weather conditions. As required, these hoses are replaced once a year to comply with DOT (Department of Transportation) requirements or whenever replacement is needed. Our Century® Air Brake Hoses meet SAE J844 and DOT_FMVSS – (49 CFR 571.106) Specifications