For Mitsubishi Lancer Evolution X 3-Ply Silicone Radiator Coolant Hose (Blue) - 10th Gen CZ4A 3-Ply (4mm) Nylon for Strong Reinforcement Increases Engine Performance and Efficiency and Helps to Keep Engine Bay Temperatures Cooler Withstands Operating Temperatures up to 330F Degrees Fahrenheit Hose Inlet Inner Diameter: 1.25" / Outlet Inner Diameter: 1.25" / Size (Diameter) Tolerance: +/- 0.225" Work With Factory or Aftermarket Radiators