Driving down the road today and hit some guy's mirror while squeezing down a narrow road. Things seemed fine till I parked later on to realise the front plastic casing on the mirror was knocked off on the left side. Headed back and cannot find it -.-

Is there anyone who may know where I can get the cover alone or would I have to buy an entire replacement unit? It's a 2002 E39 (facelifted version)

 

You can get one from eurocarparts but it will need to be painted (come primed).