I just had the same peoblem in my 87 wolfsburg vanagon.  I got rubber ones
made up from my old pipe fittings from Ken at WWW.VanAgain.com because he is
close and has always given sound advice on the list.  I know Frank can get
them made up too.  His site is: http://members.aol.com/fkc43/busindex.html
go to the "mechanical" page.
Frank also gives great advice and was very kind over the phone.  I have yet
to test my ps lines out as i am waiting to put one last fuel line in.  I will
post my results to all. The dealer wanted about $166.00 for one metal
replacement line!  I thought that was a bit high.  Good luck w/ it.  I am
sure either of those gentlemen will help you out.   I have no business
interest w/ these 2 gents just passing along some info.

Paul       TGIF    ibuyvws@aol.com
87 wolfsburg edition vanagon
65 21 window deluxe bus
71 squareback automatic