Derby cover gasket

Discussion in 'General Harley Davidson Topic' started by little_earl, Dec 6, 2008.

  1. little_earl

    little_earl Active Member

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    I have a Willie G derby cover and am changing out the primary oil. The gasket the dealer gave me is a big cork gasket with a raised red rubber seal on it. My question is do I need to put some sealent on it also?
     
  2. glider

    glider Veteran Member

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    No sealant necessary. Use the proper marked side inwards. You can also reuse the factory "O" ring many times before replacing it.

    Should have added here with the stock cover. Not sure about the Willie G cover if the stock "O" ring can be reused with that cover.
     
    Last edited: Dec 6, 2008
  3. little_earl

    little_earl Active Member

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    Thanks Glider. Your always a big help.
     
  4. BMann

    BMann New Member

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    So I'm installing the same cover do u still use an o ring with it or just the gasket with the red rubber seal ?
     
  5. dbmg

    dbmg Experienced Member

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    Its dependent of year. What was installed on cover when removed???
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    Right on again, if the cover is smooth inside with no channel for the O ring he will have to use the new cardboard and silicone bead gasket
     
  7. BMann

    BMann New Member

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    It's an 06
    And I haven't done it yet - but YouTube vids show the original o ring with the orig cover is replaced with a gasket
     
  8. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    one time I ordered by part number for the o ring I got the gasket with the red rubber seal
    Remove o ring place to one side for other uses and fit the gasket it works fine on my 2 big twins and easier to keep in place when fitting the derby cover

    Brian
     
  9. dbmg

    dbmg Experienced Member

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    You will need a gasket.
    http://www.harley-davidson.com/store/skull-derby-cover-25441-04a
    Fits '99-later Evolution® 1340, ’99-later Dyna® and Softail® and ’99-’15 Touring and Trike models (except FLHTCUL, FLHTKL or '07-’15 Touring or Trike models with Narrow-Profile Outer Primary Cover P/N 25700385 or 25700438). Installation on '06-later Dyna®, ’07-later Softail®, '07-‘15 Touring and Trike models require separate purchase of Gasket P/N 25416-99C.
    http://www.boardtrackerharleyonline...asket-clutch-cover-25416-99c?page_580440596=6
     
  10. Jack Klarich

    Jack Klarich Expert Member

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    Here is the file on the Derby cover with instructions and pictures and part numbers, The gasket is shown not included, it shows the part number the dbmg pointed out to you
     

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