In a message dated 5/30/2006 1:55:32 PM Pacific Standard Time, wlail@OU.EDU
writes:

Is  anyone familiar with these covers and where they may be foun

I'll bet most list vendors have them for about $10 to $15. Vanagain.com,
Busdepot.com, gowesty.com

It's a plastic piece like a piece of tupperware that snaps over the flu
vent. As far as I know it's designed only for use when washing the vehicle  to
keep water out. I'm not sure it's designed to stay on place at highway  speeds.
I've accidentally left my flu cover on and it has stayed on at highway  speeds,
but again I'm not sure in a long-term way it'll always be there without  some
addition means of securing it. And when I say "highway speeds" I mean that
in an early 1980's highway kind of way--afterall no one would accuse a Vanagon
of going highway speeds in the new millenium. (chime in all you with engine
conversions...bragging about getting up highway hills without pedaling.)

Best,
Jeff
83.5 Westy
LA,CA