Mishimoto MMHOSE-WRX-15BK Subaru WRX Silicone Radiator Hose Kit, 2015+, Black Direct fit for the 2015+ Subaru WRX INNER DIAMETER: Hose 1: 0.28", Hose 2: 1.54", Hose 3: 1.54" OUTER DIAMETER: Hose 1: 0.55", Hose 2: 1.89", Hose 3: 1.89" High grade silicone and heat-resistant embedded fibers feature max temp of 330F Mishimoto Lifetime Warranty