Mini (1st Gen) Interior Air Filter (Activated Charcoal) by AIRMATIC Cabin Air Filter Activated Charcoal. part# (64 31 9 257 505). Fits: r50: (2002-2006): Cooper Base Coupe Fits: r52: (2005-2008): Cooper Base Conv Fits: r53: (2002-2006): Cooper S Coupe Fits: r52: (2005-2008): Cooper S Conv