Mishimoto Black MMHOSE-MIA-99BK Mazda Miata Silicone Radiator Hose Kit Direct fit for 19992005 Mazda Miata INNER DIAMETER: 1.18" OUTER DIAMETER: 1.54" Maximum Temperature: 330F Constructed with high grade silicone and heat-resistant embedded fibers 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" Outer Diameter: Hose 1: 1.54", Hose 2: 1.54"