This part is 'LEFT Side' or driver side on US cars, that covers the brake fluid reservoir.
Fits the following models:
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
The hardware for installing the apron a hex bolt and plastic nut for each side at the outer ends of the apron and you should be able to re-use the existing hardware. If you need to replace them, see the following: