Silicone Coolant Radiator Hose FOR YAMAHA RHINO 660 YXR 660 2004-2007 Made of High Quality Silicone For High Temperature and High Boost Application. Full 4.5 mm Thickness 3-Ply Nylon for Strong Reinforcement Withstands Operating Temperatures from -65F to 500F Degrees Fahrenheit Working pressure 85 PSI / Burst pressure 245 PSI