This filter fits the JCW Intake in both the Gen 1 (R53/R52) Cooper S as well as the Gen 2 (R55/56/57) Cooper S.
Fits the following MINIs WITH the John Cooper Works Tuning Kit Cold Air Intake:
2002-2006 R53 MINI Cooper S Hatchback
2005-2008 R52 MINI Cooper S Convertible
2007-2010 R56 MINI Cooper S Hatchback
2008-2010 R55 MINI Cooper S Clubman
2009-2010 R57 MINI Cooper S Convertible
NOTE: Check to make sure your JCW intake has the 'cylindrical filter' and not the flat panel filter. This is not a 'conversion' kit.
A dirty air filter lowers your gas mileage. Change this filter once a year or more often if you drive in a dusty environment.