Re: E34/M50 Water Pump Query

[Roger Baker <m3bmw1@xxxxxxxxxxx>]

The plastic impeller was used 'til around 1995. Odds are against the
stock plastic pump living this long, but I have seen the occasional one
make it. If you have any doubts (and there is no external way to tell
which pump you have) replace it ASAP! Go with a factory BMW pump as most
of the aftermarket pumps I have tried leak or generally suck. They are
pretty cheap (~40$) so it's mainly the labor if you have it done. Also
do the belts, flush the coolant, & change the thermostat while in there.
You may want to change the fan clutch too as they do wear out. 
Roger Baker

Seeker <rfg@domain.elided> wrote:
>         Not wishing to be the UNhappy owner of a 1992 525i, is there anyway
> to know for certain if my '92 525i is indeed an "early" model M50 and has a
> plastic impeller?
>         Many thanks,
>         Bob G.

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