Introducing the all-new Evolution sealed air intake system Part Number EVO1200 for the Subaru WRX H4-2.0L Turbo! From the one-piece sealed housing that utilizes our all new Injen Twist-Lock System (Patent Pending) to securely attach a massive SuperNano-Web Dry air filter in place all the way down to the premium hardware, Injen has put it all on the table to give you the best intake on the market.