Blue Silicone Radiator Hose Kit (MMHOSE-MUS-05BL) by Mishimoto. Includes: 6 Silicone Hoses. Inner Diameter: Hose 1 - 0.79in & 0.98in, Hose 2 - 1.46in, Hose 3 - 1.42in, Hose 4 - 1.5in, Hose 5 - 0.35in, Hose 6 - 1.22in. Outer Diameter: Hose 1 - 1.1in & 0.98in, Hose 2 - 1.81in, Hose 3 - 1.77in, Hose 4 - 1.85in, Hose 5 - 0.67in, Hose 6 - 1.57in. Mishimoto silicone radiator hose kits are made with a dual layer combining high grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with an OEM replacement fit!