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Thread: Question about Water Pump Bolts

  1. #1
    Join Date
    Dec 2003
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    NW GA
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    Default Question about Water Pump Bolts

    For the M30, can anyone tell me what the thread (rating/number) is on the 6mm X35mm bolts that attach the wather pump to the engine block? Stealer doesn't stock them and will only order in packs of 10. I only need 3 of the 6.
    1990 535i 5-sp., except for 16" M-Contours, cd deck, and clear corners, completely stock. 226k and running strong

  2. #2
    Join Date
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    Oldham, England
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    Default

    Quote Originally Posted by Mitch90535im View Post
    For the M30, can anyone tell me what the thread (rating/number) is on the 6mm X35mm bolts that attach the wather pump to the engine block? Stealer doesn't stock them and will only order in packs of 10. I only need 3 of the 6.
    When i needed some for the fan, I took one down to my local engineering/plumbing/building suppliers. They gave me half a dozen plus spring washers for free - they couldnt be bothered raising an invoice. Might be worth a try

  3. #3
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    Dec 2003
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    NW GA
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    I can find the proper length/diameter bolts at Auto Zone, Ace Hardware, just about anywhere. I'm trying to confirm whether or not the thread is 1,0 or not so I don't screw up the block threads. BMW parts dept. couldn't (or wouldn't) tell me.
    1990 535i 5-sp., except for 16" M-Contours, cd deck, and clear corners, completely stock. 226k and running strong

  4. #4
    Join Date
    Sep 2007
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    Seattle, WA
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    Looked up the part number. Found it'd been superceeded by part # 07119904589. Looked it up at a few places and found that Pelican had this as a description.

    M6X35-U1-8.8
    Looks to me like it's a 1.0 thread bolt. Can't you take one with you and make sure the threads match?
    Cosmos Black/Black 1995 540iA M-Sport
    BMW Individual Exclusive Edition, 1 of 65 total, 9/25/95 Build

  5. #5
    Join Date
    Sep 2007
    Location
    Melb, Australia
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    155

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    Those bolts are off the shelf; no special thread pitch. I don't remember what pitch it is.
    Ken, from Melbourne AUS.
    '89 535iA with a 5 speed swap.

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