I have a 1997 740IL with what seems to be a leaking auxiliary water pump. It
seem to happen only after the car has been running for awhile.

Has anyone ever tried to fix the pump? I believe the o-ring may be leaking
and was wondering if the o-ring can be replaced. If so, can I get an after
market O-ring or do I need to go to the dealer?

Any help greatly appreciated

Glen