What size are the header bolts?

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  • Raven Tooth
    Advanced Member
    • Feb 2010
    • 130

    #1

    What size are the header bolts?

    What size are the header bolts that attach to the catalytic converter's pipes? I have looked everywhere to find this info. Please tell me how to find out this info if you think I'm stupid and should have figured this out myself. :S

    I have the Bentley manual and it didn't seem to be any help.

    Out of the three possible bolts that hold the cat to the header, one is a stud that is broken in half. The other looks like an actual bolt which is in tight. The third is missing completely. I think I'm looking for another bolt to put here.

    (On the other header I have three bolts)

    I don't get why I have one stud and a bunch of bolts, or what the OEM is supposed to be. Basically I need to get my car smog tested and want to seal this up as best I can before doing so. I'm not going to worry about the broken stud, just want to put one more bolt in there and hope for the best. It's not leaking horribly but it is leaking a little.
  • Adrian_Visser
    R3VLimited
    • Jun 2006
    • 2823

    #2
    www.realoem.com is your friend. the e30 is under the archive section.

    What engine is this?

    '89 Alpine S52 with goodies

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    • Raven Tooth
      Advanced Member
      • Feb 2010
      • 130

      #3
      This site is definitely my friend. Thanks. BTW, it's a 325i.

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      • TimKninja
        R3VLimited
        • Mar 2009
        • 2131

        #4
        I think pelican has them.

        http://www.pelicanparts.com/cgi-bin/...eded%2C%20Each

        http://www.pelicanparts.com/cgi-bin/...eeded%09%09%09
        1985 325e M50TU(Sold)
        1991 318is Slicktop (Sold)
        1990 325is Brilliantrot S50/5 Lug Swapped.
        1992 525i Manual shitbox Winter Beater

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