Mishimoto MMHOSE-SUB-ITBBK Subaru WRX Silicone Throttle Body Hose, 2008+, Black Direct fit for 2008-2015 Subaru WRX INNER DIAMETER: 2.75" OUTER DIAMETER: 3.15" Maximum Temperature: 330F Constructed with high grade silicone and heat-resistant embedded fibers Mishimoto Lifetime Warranty