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  1. #1
    gibb
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    Water pump...

    Which year(s) is the water pump impellar made of plastic? I have a 1999 M3 and want to know if I need to replace it. Thanks!


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    u s/b OK NT


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    Re: u s/b OK NT

    I bought a 99 M3 a couple of months ago. The previous owner gave me a new water pump that he intended to install as a preventative measure. The one I removed was the original and the impeller was NOT plastic. I was surprised since I thought all E36's had the plastic impeller from the factory. Your car might be just like mine.

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    Re: u s/b OK NT

    you can get a Stewart, high performance wp or a Graf (?), it has a metal propeller.

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    '98 and later s/b metal


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    My 97 M3 was metal,stamped metal not cust. It is a

    lot lighter, so the life of WP is longer. Some of the graf has these. You have to check, some graf's have cust impeller.
    See bottom picture in the link.

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    Re: My 97 M3 was metal,stamped metal not cust. It is a

    +1 on the Stewart water pump. Cant go wrong and will have more than enough cooling for future mods

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