K&N Replacement Air Filter Subaru Impreza 1992-2008 / Impreza WRX STI 2005-2007 / Impreza WRX 2002-2007 / WRX STI 2001-2008 / WRX 2000-2008 / Forester 1997-2005 / Outback 1996-2004 / Legacy 1998-2004 | 33-2232

K&N's WRX & STI replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N filters are custom designed to fit into your existing factory air box for simple, fast installation. K&N stock replacement air filters for street vehicles are covered by a Million-Mile Limited Warranty. K&N Filters use oil to provide filtration, and can be washed and recharged using the K&N cleaning kit (sold separately).

Part Number: 33-2232

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