This is a hall sensor switch that detects clutch engagement.

Fits the following models with Manual Transmissions:

2002-2006 R50 MINI Cooper and R53 Cooper S Hardtop
2005-2008 R52 MINI Cooper and Cooper S Convertible

2007-2013 R56 MINI Cooper and Cooper S Hardtop
2008-2014 R55 MINI Cooper and Cooper S Clubman
2009-2015 R57 MINI Cooper and Cooper S Convertible 
2012-2015 R58 MINI Cooper and Cooper S Coupe
2012-2015 R59 MINI Cooper and Cooper S Roadster
2011-2016 R60 MINI Cooper and Cooper S Countryman
2013-2016 R61 MINI Cooper and Cooper S Paceman