Need some tech help

Passenger side window recently broke a clip at the top of the regualtor I have pictured below. If anyone knows how to fix the clip inparticular or the part # if it is even possible to fix w/o buying a new window regulator, that would be greatly appreciated.


Also, the car is a 2002 x5 4.4i. It has severe coolant leaking issuses that I cannot seem to locate. I have taken the plastic plate under the radiator off to take a better look and had no luck. Also had no luck at the coolant expansion tank at top of engine bay. Does anyone know which hose may be responsible? It does seem to be coming from the driver's side of the radiator though.

Search youtube for a video on fixing the clip.