Mishimoto MMHOSE-CIV-06BL Honda Civic Silicone Radiator Hose Kit Si, 2006-2011, Blue Direct fit for 20062011 Honda Civic SI INNER DIAMETER: Hose 1: 1.18" Hose 2: 1.18" Hose 3: .94" OUTER DIAMETER: Hose 1: 1.54" Hose 2: 1.54" Hose 3: 1.3" High grade silicone and heat-resistant embedded fibers feature max temp of 330F Mishimoto Lifetime Warranty Interior Material: Heat-resistant embedded fibers Exterior Material: Silicone Maximum Temperature: 330 F Inner Diameter: Hose 1: 1.18", Hose 2: 1.18", Hose 3: .94" Outer Diameter: Hose 1: 1.54", Hose 2: 1.54", Hose 3: 1.3"