Very high flow rates, minimal restriction, maximum filtration, and long filter life are all features of COBB High Flow Filters. It has a precision-molded rubber base and is made of exclusive Woven cotton and metal mesh. Very high flow rates, minimal restriction, maximum filtration, and long filter life are all features of COBB High Flow Filters. The COBB High Flow Filter makes sure that only clean air enters your engine for maximum efficiency using patented woven cotton and metal mesh with a precision-molded rubber base. Why not use a COBB High Flow Filter to give your car some fresh air, and let it repay you with more power and fuel efficiency? NOTES EMISSIONSThis part is not an emissions-related part and therefore can be used on Emission Controlled Vehicles. APPLICATIONS MAZDA3 MPS / MAZDASPEED AXELA / MAZDASPEED3 (2007, 2008, 2009, 2010, 2011, 2012, 2013) FEATURES Washable/Reusable Cotton Woven Media Precision Molded for Direct Drop In To The Factory Air Box Increased Air Flow While Maintaining Filtering Efficiency Pre-Oiled