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What under engine covers in an M3?

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  • What under engine covers in an M3?

    Car is a 1997 M3 sedan, manual transmission. When I bought the car it did not have any plastic/aluminum covers under the engine/transmission. I have been trying to find what covers I am missing, but it has been harder than I expected.

    A search on realOEM revealed the following part numbers: 51712250643, 17112227690, 51718209093. However, I have not found pictures to show me how these are installed.

    Can anyone help me determine what covers should be there? Pictures would be great.

    Thanks!

  • #2
    Are you really set on OEM? They are prone to failure and take no abuse.

    Turner makes a fantastic aluminum underpanel. It’s a copy of the Motion Motorsport piece but they fixed all the issues the MM panel had.

    I would recommend that alu panel and fresh fender liners (unless yours are fully intact).

    https://www.turnermotorsport.com/p-5...SABEgJrw_D_BwE

    MSportParts | Braymond141

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    • #3
      Thank you for the information. I would consider aftermarket, but I first want to understand how the stock covers work. Apparently there is a stock aluminum cover under the transmission that someone said will not work with the x-brace (which I have). Do you know anything about that?

      I hope to understand what covers were available from the factory, what I am missing, and how they fit. Then I can make a decision.

      The fender liners are in good shape, I actually replaced one just recently.

      Thanks!

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      • #4
        From the info I have, these covers didn't come on US spec M3's.

        I heard different stories about their sustainability. Now my car isn't a high miler by any means, but all underside panels are still all ok, with no broken tabs/fasteners. But they are not subjected to abuse.

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        • #5
          Thanks for the feedback! Do you know if any of these covers will fit US-spec M3s? I like having the protection the covers offer while staying original, and don't mind adding them even if they were not standard equipment. But right now I have no way to find out if they fit other than ordering and potentially returning them.

          For those interested in seeing the three covers, here are the links I found:

          https://www.fcpeuro.com/products/bmw...36-51712250643
          https://www.fcpeuro.com/products/bmw...mm-17112227690
          https://www.fcpeuro.com/products/bmw...um-51718209093

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          • #6
            Those pieces in the 1st two links are used together.

            The piece on the first link is an underbelly splash shield secured to your frame rails. Its purpose is to protect the pulleys and belts that are exposed to the ground.

            The piece on the 2nd link sits on the center belly to divert airflow into the radiator.

            No clue what the 3rd piece is used for.

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            • #7
              Originally posted by Braymond141 View Post
              Are you really set on OEM? They are prone to failure and take no abuse.

              Turner makes a fantastic aluminum underpanel. It’s a copy of the Motion Motorsport piece but they fixed all the issues the MM panel had.

              I would recommend that alu panel and fresh fender liners (unless yours are fully intact).

              https://www.turnermotorsport.com/p-5...SABEgJrw_D_BwE
              That Turner underpanel would work the same with your GT tray brackets? I vaguely remember you having a write up about configuring the OEM GT tray you work with a MM underpanel.

              I’m strongly considering going that route since I need to get rid of this cracked ACS replica crap.

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              • #8
                Originally posted by 95airmax View Post

                That Turner underpanel would work the same with your GT tray brackets? I vaguely remember you having a write up about configuring the OEM GT tray you work with a MM underpanel.

                I’m strongly considering going that route since I need to get rid of this cracked ACS replica crap.
                Yep, it would work the same as the MM method.

                MSportParts | Braymond141

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                • #9
                  Originally posted by Braymond141 View Post

                  Yep, it would work the same as the MM method.
                  Just noticed that write-up never made it from the old forum... Any chance we'll get that here?

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