2011-2015 Mini Cooper Countryman 1.6L Natural Aspirated & Turbo Models. 1 x Part# 2008-522400 Serpentine Belt Tensioner For Alternator & AC Compressor. 1 x Part# 6PK900 355K6 Serpentine Belt. 2007-2015 Mini Cooper Base 1.6L Natural Aspirated & Turbo Models.