Water pump GRAF or GMB

I got the graf as well, def better than what the previous owner used

Graf is fine, I've put a bunch of them in 240s over the years, none have failed yet.

Graf is good.

I ended up going with the water pump here: Graf Water Pump . There is no difference in engine performance or fuel economy with the new pump. But it will take longer to warm up, especially in colder weather.

I replaced both mine and my dad's with GMB. Mechanic recommend it too. So far so good.

I personally replaced the water pump on my Tiguan with a Graf aluminum pump. The only issue I've had was the rubber o-ring on the temp sensor leaking. I replaced all the rubber seals with Rein branded ones and no more leaks.

I finished the water pump replacement with the Graf Aluminium pump. Nice pump. As per Qmulus recommendation, I replaced the coolant sensor Oring with OEM. While in the process, I replaced the oil filter housing along with a new oring for it.

I think I'll just grab a GRAF 30mm unit and compare unless someone has good info on brand quality/fitment.

16,000 Miles (12 months) and now the Graf is leaking. After researching it seems a few bearing failures, a few thermostats, and some sensors out of the box are failing on these Graf pumps.

I just bought one of these Graf aluminum pumps for an engine that I am building, but before installing it I asked around with the VW tech friends I know what their impression of it is. The consensus was "not great". One shop had to warranty two of them because the seal to the block failed, tearing at a T where it connects the two passages.