Made of High-Quality Silicone Direct Bolt-On to EJ20/EJ20T Engines For High Temperature and High Boost Application. 4-Ply Nylon for Strong Reinforcement 4mm Thickness Withstands Operating Temperatures from -65F to 350F Degrees Fahrenheit Working pressure 80 PSI Burst pressure 285 PSI Professional Installer is Highly Recommended (No Instruction Included) Brand new parts, High-quality silicone hose.