OEM plastic water pump impeller VS Geba OEM Metal impeller

[kokgo20]

I remember this has been discussed on the Old forums but my memory doesn't serve me correctly on what the debate was between the plastic impeller VS the metal impeller?
FCP Euro listed Geba with metal impeller as OEM brand
Any thoughts on comments?
Thanks in advance!

[enjoy_m3]

They are both good units, it really depends on what you're comfortable with. I rebuilt my engine and had compared both with the OEM plastic and Metal impeller. Based on my observation, the oem plastic impeller had better, more refined fins than the metal so I went with OEM bmw.

[zem]

Have the Geba with the metal impeller and it's good. Have had it in the car for 6 years so far, no issue.
The car is a 3 -season daily (no winter). Here in PA it can get really hot and humid in the summers, where you're sitting in traffic with the AC on, no problem.

[Obioban]

OE flows better.

Composite eventually disintegrates. Metal wears out the bearing faster. Choose your poison.

I’m sticking with OE, but replace it every 100,000 moles— before it has an issue.

[kokgo20]

OE flows better.

Composite eventually disintegrates. Metal wears out the bearing faster. Choose your poison.

I’m sticking with OE, but replace it every 100,000 moles— before it has an issue.

Rien, Geba, Saleri or Genuine BMW?

[terra]

Genuine BMW. None of the other water pumps available are the same.