2001 BMW 7 Series Engine

I NEED TO HAVE A NEW ENGINE PUT IN FOR MY 2001 740I BMW DUE TO A CRACKED RADIATOR WHICH LED TO THE DAMAGE OF THE ENGINE BEYOND REPAIR. THE CAR HAS 68,000 MILES ON IT. I WAS FORTUNATE THAT I WAS NOT INJURED AND I DID NOT CAUSE AN ACCIDENT ON THE HIGHWAY. I CONTACTED THE COMPANY EXPLAINING MY SITUATION. BMW REFUSED TO ACKNOWLEGE THAT THERE ARE SOME MAJOR DEFECTS WITH THE RADIATOR AND REFUSED TO HELP PAY FOR THE COST OF THE NEW ENGINE. I HAVE DONE SOME RESEARCH ON THE WEB AND HAVE FOUND THAT MANY BMW OWNERS ESPECIALLY BMW 7 SERIES MODEL HAVE GONE THROUGH THE SAME PROBLEM. THERE'S ALSO A PETITION CONCERNING MAJOR DEFECTS WITH ALL BMW 7 SERIES' RADIATOR. THE DEFECTS HAVE CAUSED THE COSUMERS COSTLY REPAIRS NOT TO MENTION DANGEROUS DRIVING CONDITIONS WHICH COULD LEAD TO SERIOUS INJURIES OR EVEN DEATHS. THANK YOU FOR YOUR CONSIDERATION! REGARDS, CHI TRUONG