HPS 27-165WB Short Ram Air Intake Kit Fits: 2003-2009 Mazda3 2.0L/2.3L Non Turbo Replaces the stock restrictive air intake box, increases horsepower, overall air flow and improve throttle response Mandrel-bent aluminum tube piping for optimal air flow Includes K&N High-Flow Performance, Washable/Reusable Air Filter which is backed by Million Mile Limited Warranty Dyno Proven Performance Gains with safe air fuel ratio