Mishimoto has developed a silicone intercooler hose kit for the 2001-2005 Subaru WRX. Mishimoto Silicone Intercooler Hoses for the Subaru WRX are engineered for a direct OEM fit. The kit includes a "Y" hose, a throttle body coupler, and a hose to connect the blow-off valve to the turbo inlet.