Cyco Gaskets
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Primary covers 
CYCO PART#
Sportsters
cy-34955-52------fits iron head sportster from 1952 to 1967 foamet only
cy-34955-67------fits iron head sportsters from 1967 to 1975 foamet only
cy-34955-75------fits iron head sportsters from 1975 to 1989 foamet only
cy-34955-89------fits evo sportsters from 1989 to 2004 interface with beading and foamet
cy-34955-04------fits evo sportster from 2008 foamet only which is oe
cy-34955-08------fits 2008 and up sportsters foamet only which is oe
 
Baggers
cy-34901-79-----fits 1979 to 1985 which we substitute the 34901-85 since it also fits interface with beading and foamet
cy-34901-85-----fits 1979 to 1985 interface w/beading and foamet
cy-34901-94-----fits 1994 to 2007 interface w/ beading and foamet
cy-34901-07-----fits 2007 up to present foamet only which is oe
 
Softails
cy-60540-36------fits panhead cork style
cy-60540-65-----fits 1965 to 1981 foamet only
cy-60538-81-----fits 1981 to 1989 also will fit the 60540-65 applications  (9 hole fits the 8 hole with an idle hole) paper and foamet
cy-60539-89-----fits 1989 to 1994  we use the 60539-94 which also fits this application interface w/beading and foamet
cy-60539-94-----fits 1989 to 2006 interface w/ beading and foamet
cy-60547-06-----fits 2006 to present softails which is the same primary which clients call a dyna foamet only which is oe
 
Inspection covers softails
cy-60567-90-----fits softails from 1965 to 2006 which no longer has an inspection cover foamet only
 
Inspection covers baggers
cy-34906-79-----fits 1979 to 1985
cy-34906-85-----fits 1985 to 2007 which no longer has an inspection cover
 
Derby covers
cy-25416-70-----3hole 1970-1999
cy-25416-99-----5 hole 1999 to 2006 softail and 1999 to 2007 bagger OE went to a silicone O-ring. 5 hole 25416-99 still works
cy-17369-06-----orange silicone oring is now OE in a service kit form ( we sell kits and O-rings in bulk  (25416-99 5 hole still works)