Welcome to German cars where stuff fails pre-mature thats not suppose to fail..
My Honda & Nissan water pumps lasted well over 100k miles, My nissan is a 92 still on original and my Honda got a new one only cause I was doing the timing belt.
Best of luck and Keep us posted My dealer has been pretty good in NJ
13 F30 328i Sport 6MT
92 Sentra SE-R SR20DET DET Build Thread
08 E90 328i Sport [sold]
89 E30 325is [sold & missed]