These are a pain to replace unless you remove the airbox and runners.  The
gap between the runners and the airbox flange is very small, maybe 1/2"
IIRC.  I decided to change mine when I replaced all the vacuum lines and
fuel lines.  The VW dealer could not remember anyone ever ordering these
before.  Mine were a little frayed on the ends, but they really only  have
to seal that small gap in the center.  I cut  the old crimp clamps off and
replaced with stainless worm-gear type, but you could probably go
clamp-free.  They really fit tight and it is only holding vacuum.  Worth
removing the airbox and use a little Armorall or soap to slide them on.  I
don't see how one of these could have come loose unless it was dry-rotted
and split open!

Jay

This communication is for use by the intended recipient and contains
information that may be privileged, confidential or copyrighted under
applicable law.  If you are not the intended recipient, you are hereby
formally notified that any use, copying or distribution of this e-mail,
in whole or in part, is strictly prohibited.  Please notify the sender
by return e-mail and delete this e-mail from your system.  Unless
explicitly and conspicuously designated as "E-Contract Intended",
this e-mail does not constitute a contract offer, a contract amendment,
or an acceptance of a contract offer.  This e-mail does not constitute
a consent to the use of sender's contact information for direct marketing
purposes or for transfers of data to third parties.

 Francais Deutsch Italiano  Espanol  Portugues  Japanese  Chinese  Korean

            http://www.DuPont.com/corp/email_disclaimer.html