I use the Mercedes 7.5mm fuel line, and it works great.

On Tue, Dec 23, 2008 at 04:47:52PM -0400, Dave Arthur wrote:
> I'm on the hunt for some metric fuel line. I ordered a line from VW for the
> fuel rail to injector. All they could find anywhere was a 600mm piece.
>
> It is 7.3X3. It is branded COC-TLVW 52424 FPM/ECO/AR/ECO.
>
> Now of course I could use 5/16 fuel injector rated fuel hose. It is 7.9mmx3.
>
> Knowing how critical a tight fuels system is on a Vanagon, I'd like to be
> using the 'right stuff'.
>
> Any thought or experiences?
>
> D