Quote:
Originally Posted by williamx5
I agree totally!! The two recent water pump failures I had were not a result of the impellers... Just the outer bearings coming apart... The impellers actually stayed together...
Additionally, the local parts store version I did purchase failed less than 30 minutes of run time... It's impellers did come apart when the bearing failed...
Cheers!!!
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Good point.
I remember some time ago needing a WP the same day and going to Pep Boys.
I don't care much for them but they did have Bosch WP in stock for E39 I6 IIRC. I took it out of the box and it had big heavy cast impelers and the casting looked very rough.
On the other hand I just replaced original WP on my X5 (14 y / 109 k)
It was weeping and the bearing was starting to go but composite impellers looked good and I've actually tried to break and bend them with no success.
I used Italian made OEM Saleri with composite impellers stamped INA Germany. The gasket seemed inferior and it did leak upon installation until I went with Victor Reinz gasket with black silicone bead embedded on one WP side of gasket.