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

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    #61
    PM Replied, thank you.
    Original Owner - 2003 ///M3 - 6MT/LSB/Impuls/Anthracite
    M3Forum.net member since Dec 2002

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

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      #62
      Bought this and it worked well. Thanks! I used a stubby ratchet and an extension and it worked just fine. Old o-ring was like a ring of plastic.

      Is anyone actually torquing it to spec? I can't get my smallest torque wrench in there, though tightening with the stubby would be rather difficult to over-torque with only some of my fingers. Of course I don't want it to leak either...

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        #63
        John's an awesome guy.
        Reached out to him for the CPV tool.
        Answered my questions and gave me confidence of tackling the job.
        No issues removing and reinstalling the CPV.

        There's absolutely no way to torque it in the car. Bottom it out and you're good to go.

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