Master cylinder piston rubber boot.

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  • mpencegs
    • Feb 2026

    #1

    Master cylinder piston rubber boot.

    So I was moving the rubber boot to get to the snap ring when I noticed that the rubber boot has a small hole in it.. I cannot seem to find a way to get the boot without the rest of the piston cup set (#1 in pic).. All the sites list that area as one complete part. Any ideas or as long as the hole is small will I be ok?

  • 7981GS

    #2
    Contact Bendix and tell them your bore I.D.
    They probably have a rebuild kit with that seal or perhaps a local brake specialty shop.
    My counterman (that I have known for years) just pulled one out of his parts bin of left over parts and gave one to me.

    Daniel

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    • mpencegs

      #3
      cool.. Any idea if the boot is more to keep dirt out or to keep fluid in?

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      • snicrep5

        #4
        keeps dirt and water out if the rubber is in not decomposing, I would put a dab of silicone on it to plug the hole before ordering a new kit, but im extremly "frugal".

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        • mpencegs

          #5
          Originally posted by 7981GS
          Contact Bendix and tell them your bore I.D.
          They probably have a rebuild kit with that seal or perhaps a local brake specialty shop.
          My counterman (that I have known for years) just pulled one out of his parts bin of left over parts and gave one to me.

          Daniel

          Where would I find the bore id number.. The boot was trashed so will definitely have to get a new one..

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