K&N 4 ply panel washable air filter Fits stock 2010-2014 Mustang GT airbox. Will NOT fit 2005-2009. Fits stock 2011-2014 Mustang V6 airbox. Will NOT fit 2005-2010. Fits stock 2012-2013 Mustang Boss 302. Flows approximately 22% more than stock filter at 1.5" H2O delta pressure Co-Engineered by K&N and Ford Racing Does not require PCM recalibration