I had a mechanic work on my 2014 coupe and noticed a coolant leak a few weeks later. I'm sure its been leaking since he worked on it but with snow and rain on the garage floor didn't notice. Looked at the coolant reservoir and notice the screw was stripped holding it to the radiator as well as one of the plastic slots that keeps it snug is broken off. Of course mechanic denies he did it so I need a replacement but can't find anything online? Can anyone help guide me in the right direction please?

 

Are you looking to replace the reservoir or just the screw?

MINI Cooper R56 Coolant Expansion Tank Replacement (2007-2011) | Pelican Parts DIY Maintenance Article
this might help

 

I need to replace the plastic bracket that attaches to the front frame

 

It looks like the plastic bracket is molded on the radiator housing plastic online. Thats a terrible design. Maybe an aftermarket expansion tank with its own bracket assembly?