Did some serious part number searching at the local FLAPS for a 1/2"x
1/2" male end plastic pre pump fuel filter for our Vanagons.  Well,
turns out I got close.  I found a metal one(sorry, you see through
freaks), from Wix with number 33299.  I think I paid about $6 for
itIf your local folk don't sell wix, at least you have a number to
cross reference with.

Now for  some better news.  While sniffing around my newly acquired
87 Audi 4000CS Quattro(rusty, but will make a nice winter car to
spare the Vanagon seams), and surfing the blauparts website, turns
out this car also has a pre-filter for it.  blau wants $14.50 for it
and I think that's a little high(they also wanted $8.50 for a rear
caliper brake bleeder screw and I thought that was highway robbery,
especially since the part number was a 113 prefix! , until I called
the local VW dealer and they wanted $14 + for that number.  Didn't we
used to buy the ATE rear wheel cylinders new for less than $14?)  But
I digress. The local Wix part number for that Audi Prefilter(not
acutally listed for Audi, but the picture and dimensions in the photo
were right on) is a 33278 for $8.50.  He had to special order
it(actually 3), but I'm going to get the metal one in for now.

The Audi pre filter is a plastic see through design, and has a
mounting tab for the unit somewhere back there by the tank.  The only
drawback is the  the male ends are offset slightly and I didn't see a
problem using it on the Vanagon.  Anybody else tried this?  Or
something similar?

Max