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Main relay part number?

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    Main relay part number?

    I cant seem to find a part number for it anywhere? Im talking about the relay that sits to the left of the fuel pump relay. Is it just a universal 5-prong relay? Any help is appreciated.

    Thanks.
    Last edited by Ender.; 11-25-2007, 01:18 PM.
    Keep on Keepin' on.


    #2
    Mine has five prongs. Search under DME relay -- that's how my parts guy found mine -- he could not find it under "main relay". Mine's made by Siemens.
    Last edited by strad; 11-23-2007, 01:39 PM.
    The current fleet:
    1992 325ic: 148k-171k miles
    1999 Chevrolet Tahoe LT 4WD, 114k-142k miles
    1984 MasterCraft Stars and Stripes Powerslot (not a car :D) PCM Ford 351W, 904 hours

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      #3
      Originally posted by strad View Post
      Mine has five prongs. Search under DME relay -- that's how my parts guy found mine -- he could not find it under "main relay". Mine's made by Siemens.
      Good call, mine is a 5 prong too. Ill take a look.
      Keep on Keepin' on.

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        #4
        I found one on bavautos website, but it says that is is the main relay on some cars. I wish I could find the it!
        Keep on Keepin' on.

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          #5
          Okay, pulled the relay, as well as the old one I had on the shelf. Both parts are correct for a late M20b25. Don't know if correct for an M20b27.

          Siemens (the old one)
          V23134-C52-X90
          BMW 12.63-1729004

          Unknown brand (logo is S on top of X) (the one currently in the car)
          89 9509 000
          PA6.6-GF35
          Made in Hungary

          I ran into the same issue as you online. Ended up going to a local European parts specialist, who found the DME relay for me. He thought the generic might work, until I pointed out that the little retaining hooks on the side of the relay needed to be present for it to stay tight in the receptacle.
          The current fleet:
          1992 325ic: 148k-171k miles
          1999 Chevrolet Tahoe LT 4WD, 114k-142k miles
          1984 MasterCraft Stars and Stripes Powerslot (not a car :D) PCM Ford 351W, 904 hours

          Comment


            #6
            A generic relay w/o the side bumps works fine. A tie-wrap can be used to hold the relay in the socket and that solution is much more secure than the side bump retainer.
            The car makes it possible, but the driver makes it happen.
            Jim Levie, Huntsville, AL

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              #7
              Watch using a generic 5 pin, as from what I have seen, there a dual 87 design. (as opposed to having an 87 and an 87a)
              -Dave
              2003 Lincoln Towncar | 1992 BMW 325iC | 1968 Cadillac Deville

              Need some help figuring out the ETM?

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                #8
                Cool thanks for the help guys.
                Keep on Keepin' on.

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