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Thread: Need part # for this o-ring

  1. #1
    Join Date
    Aug 2010
    Location
    West Nyack, New York
    Posts
    1,391
    My Cars
    86 635csi 98 740i 96 MB

    Need part # for this o-ring_SOLVED_Press-Fit

    Didn't get # 9 in the OEM gasket set, looks like it would fit.

    #8 in the package does not fit, diameter too large.

    Did a general Google search for "dipstick tube 0 ring" and

    found rings but not for the m30 b34 block.

    There's no o ring groove on the bottom of my tube.

    As a matter of fact, no m30 was listed.

    If I can't get a part # can a guru tell me the o ring size.

    Or, do you think one of the listed rings would work for the m30--

    Or, if I measure the ID of the block and OD from

    the tube how thick of a generic o ring should I try to get.

    Posting on BigCoupe also.

    Thanks for all & any info.

    https://www.realoem.com/bmw/enUS/sho...diagId=11_3054
    Last edited by 1986series6; 05-22-2019 at 12:53 PM.

  2. #2
    Join Date
    Sep 2016
    Location
    North Florida
    Posts
    111
    My Cars
    1983 633csi, 2017 540i

  3. #3
    Join Date
    Aug 2011
    Location
    Ireland
    Posts
    111
    My Cars
    M3
    Hi
    If you look at that diagram the numbers are "greyed out" that generally means they are not for your car. I entered my vin and got the same diagram with the numbers "greyed out". This happens when there are different options and some diagrams say "no parts listed for your car"

    Does your car have an o-ring? A lot of the M30 dipsticks are an interference fit in the block with no o-ring used. If it needs one measure the outside diameter of the tube and the inside of the hole and see what thickness is available.

  4. #4
    Join Date
    Aug 2010
    Location
    West Nyack, New York
    Posts
    1,391
    My Cars
    86 635csi 98 740i 96 MB
    Thanks for all the input.

    Talked to the builder and told me press fit.

    Old geezers always jump the gun.

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