The RADIATOR-1 SAE J20R1 Blue Silicone Radiator Hose (1") is a heavy-duty coolant hose designed for radiator lines and turbo-diesel cooling systems, offering strong pressure performance and reliable flexibility for demanding applications. With a 150 PSI max working pressure and 450 PSI minimum burst pressure, it’s built to handle heat and coolant flow without drama—because the cooling system already has enough going on.
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