Changing back boxes - part numbers for nuts, bolts and gasket?

Discussion in 'E90 Saloon / E92 Coupe / E93 Convertible M3 (2008-2013)' started by madda, Jan 10, 2018.

  1. 10 Jan 2018 at 12:09 PM #1
    madda

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    When I swap my box I want to be prepared.

    Does anyone have a list of the bits the gathered before doing the swap themselves?

    Cheers
     
  2. 10 Jan 2018 at 1:07 PM #2
    chrisc

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    Grab the part numbers from Realoem.com :thumbsup:
     
  3. 10 Jan 2018 at 1:14 PM #3
    MarkRF

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    The clamp bolts sometimes shear, that’s all I bought. The hanger bolts etc in would just reuse.

    I think the clamps were about £15 each from bmw
     
  4. 10 Jan 2018 at 1:43 PM #4
    Keith

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    Do you need to use exhaust paste between the connecting pipes and x-pipe before clamping up?

    I didn't when I did mine, as it didn't look like there was any there in the first place, and the mechanical connection seems firm enough, but I've always wondered.
     
  5. 10 Jan 2018 at 2:45 PM #5
    MarkRF

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    I did and would do so on any exhausts joins but I dare say it’ll be fine without.
     
  6. 11 Jan 2018 at 11:43 AM #6
    abeardo83

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    If it's an e9x, be prepared for the ground cables to snap too. They're attached either side of the backbox. Cost about £40 each to replace.

    Mine both corroded off when i had mine removed. Didn't replace them and *touch wood*, nothing untoward has happened yet...
     
  7. 11 Jan 2018 at 2:07 PM #7
    djgandy

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    And if you have new hangers it will save you time, took me half hour to remove the left on off my old backbox, right pain in the ass.
     
  8. 11 Jan 2018 at 7:40 PM #8
    Dek

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  9. 11 Jan 2018 at 8:14 PM #9
    Dek

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