For Ford Explorer/Ranger/Mazda B3000/B4000 V6 AT 3-Ply Silicone Radiator Coolant Hose (Blue) - 3.0L 4.0L 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 1 Inlet/Outlet Inner Diameter: 1.5"/1.5" / Hose 2 Inlet/Outlet Inner Diameter: 1.25"/1.25" / Size (Diameter) Tolerance: +/- 0.225" Work With Factory or Aftermarket Radiators