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E46 M3 (S54) CPV High-Temperature O-Ring and Service Kit for Constant Pressure Valve

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    E46 M3 (S54) CPV High-Temperature O-Ring and Service Kit for Constant Pressure Valve

    **Winter 2020 - THESE ARE IN STOCK!**

    Well, I'm not sure if M3Forum will be put back up, so I want to ensure these are available as people continue to service their cars. For those who may not know me, I'm the one who developed and have offered this CPV oil-leak fix/solution exclusively to M3Forum members back in 2011! Viton Fluoroelastomer high-temperature O-Rings to fix the infamous CPV oil leak on the S54 motor (also known as the Euro valve). These rings are much higher quality than the Buna-N o-rings that are used for most gaskets (including the CPV). These have twice the temperature threshold (400 degrees) and are much more resistant to oil/petroleum products. If you notice an oil leak under the car where the engine and transmission meet that appears to be the rear main seal, its most likely this. It isn't the valve that has failed, but the o-ring seal itself has hardened and failed. In fact, the CPV itself is not a common failure item, so replacement is not necessary. Exact fit to factory specs!

    The o-ring on the CPV WILL leak, it is just a matter of when. Even if you are purchasing a new CPV, you should still replace the o-ring with this more durable one! The kit includes the special tool for CPV removal. A 4" extension is recommended. If performing this job with stock headers, a swivel tool will also assist in accessing the valve!

    3 Ordering Options:
    $5 for one o-ring
    $8 for two o-rings
    $25 for the kit, which includes the removal tool and (2) o-rings
    For shops/bulk orders, please DM me for a custom discount price!

    *All prices include shipping within the USA!
    *International customers welcome, DM me for a quote!


    *Paypal accepted, Venmo accepted, Apple Pay accepted*
    If you wish to pay with a credit card, please see my listing on ebay!


    Fits the following vehicles:
    2001-2006 E46 M3
    2001-2002 M Coupe/Roadster
    2006-2008 Z4 M Coupe/Roadster
    E36 Euro M3 (S50 engine ONLY)


    Ref BMW Part#: 11111318185

    1/2" Drive Drag Link Flat/Slotted Socket (bit size will be larger than 3/8"; as anything 3/8" or smaller will strip or damage the valve) 11/16-3/4" socket is too large and will not fit.

    BULK PRICING AVAILABLE!
    Last edited by mpower22; 12-04-2020, 06:52 AM.
    Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
    M3Forum.net member since Dec 2002

    Official CPV O-Ring Oil Leak Fix:
    https://nam3forum.com/forums/forum/c...pressure-valve

    #2
    Bump.
    Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
    M3Forum.net member since Dec 2002

    Official CPV O-Ring Oil Leak Fix:
    https://nam3forum.com/forums/forum/c...pressure-valve

    Comment


      #3
      Order out
      PM replied.

      Thanks guys!
      Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
      M3Forum.net member since Dec 2002

      Official CPV O-Ring Oil Leak Fix:
      https://nam3forum.com/forums/forum/c...pressure-valve

      Comment


        #4
        PM replied!
        Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
        M3Forum.net member since Dec 2002

        Official CPV O-Ring Oil Leak Fix:
        https://nam3forum.com/forums/forum/c...pressure-valve

        Comment


          #5
          PM replied and new order out.
          Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
          M3Forum.net member since Dec 2002

          Official CPV O-Ring Oil Leak Fix:
          https://nam3forum.com/forums/forum/c...pressure-valve

          Comment


            #6
            Putting this up top.
            Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
            M3Forum.net member since Dec 2002

            Official CPV O-Ring Oil Leak Fix:
            https://nam3forum.com/forums/forum/c...pressure-valve

            Comment


              #7
              pm sent

              Comment


                #8
                Great member, and best CPV Viton O-ring option. Thank you Mpower for contributing to the community with this from the very beginning.

                Comment


                  #9
                  Originally posted by Exclusivs View Post
                  Great member, and best CPV Viton O-ring option. Thank you Mpower for contributing to the community with this from the very beginning.
                  No problem, and thank you for the kind words, and remembering this listing from way back!
                  Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
                  M3Forum.net member since Dec 2002

                  Official CPV O-Ring Oil Leak Fix:
                  https://nam3forum.com/forums/forum/c...pressure-valve

                  Comment


                    #10
                    Finally got around to installing a new O-ring on the CPV last August when I did headers on my E46 M3. Old ring was in definite need of replacement. Fitment was great. Thanks again for offering this solution to the community.

                    Comment


                      #11
                      Thank you for the follow up! Glad the install went well.

                      PM replied!
                      Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
                      M3Forum.net member since Dec 2002

                      Official CPV O-Ring Oil Leak Fix:
                      https://nam3forum.com/forums/forum/c...pressure-valve

                      Comment


                        #12
                        PM's replied guys, thank you.
                        Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
                        M3Forum.net member since Dec 2002

                        Official CPV O-Ring Oil Leak Fix:
                        https://nam3forum.com/forums/forum/c...pressure-valve

                        Comment


                          #13
                          Glad you introduced these.

                          Comment


                            #14
                            Thank you! Good to see you on here old friend.
                            Original Owner - 2003 ///M3 - LSB/Impuls/Anthracite
                            M3Forum.net member since Dec 2002

                            Official CPV O-Ring Oil Leak Fix:
                            https://nam3forum.com/forums/forum/c...pressure-valve

                            Comment


                              #15
                              Free bump, ordered one and it came promptly.
                              '03.5 M3 SMG Coupe - Jet Black / Black

                              Comment

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