Water pump OEM BMW or GMB

I have 20-25k miles on a GMB pump now and it hasn't leaked a drop. We'll see how long it goes, but so far I'm happy with it.

A 525tds was my first car. Only ever had two problems with it. Heater fuse kept blowing- turned out the previous owners install of the head unit used eletrical tape which over time lead to a cable shorting out on the din cage. Water pump died - oem impeller was plastic. The replacement was metal

Me and various others I know have used GMB water pumps before with no issues.

I been running a Gmb pump for couple thousand miles now. Super cheap on rock auto, they also sell a high performance one. I bought both

153k miles on my original WP. Still going strong too.

Has 137,000 miles on it original water pump. Still good to be used but don’t know when she’ll crap out. Very impressed that I lasted this long.

Buy the M340i new and prepay your services. Great on gas but insurances and tires have been expensive. Water pump blew at 48k.

It’s still baffles me how BMW can’t get a quality water pump on its vehicles.

I don't trust the BMW oem pumps any farther than you can throw them

The water pump had a micro leak that would spray coolant on the air box. Never enough to make me want to go through the trouble of replacing it.