I use radiator hose w/hose clamps on the air intake tubes.
I use 3/4" electrical conduit for the Crankcase vent to Intake Boot
fitting. It just has 2" of rubber hose on each end as a coupler.
You can use regular rubber hose on almost everything except the Fuel
Injection, on that use DOMESTIC fuel injection hose from NAPA or other
quality source.

Stan Wilder

On Wed, 22 Jan 2003 13:39:46 -0800 Tom Young <tomyoung1@ATTBI.COM>
writes:
> Hi all:
>
> I understand the two elements making up the vacuum distribution
> system in
> the engine compartment of the air-cooled Vanagons are:
>
> N 020 353 5 which is the fabric-covered sleeve and
> N 020 139 1 which is the plastic tubing.
>
> Anybody know of a source for this stuff?  None of the usual on-line
> vendors
> seem to carry these items, or at least I'm not finding it.
>
> Also, when I read "3,5x2" next to the plastic tubing and "4x1" next
> to the
> fabric-covered hose, what are these numbers referring to?
>
> TIA.
> ---------------------------------------------------------------
> Tom Young                       '81 Vanagon
> Lafayette, CA 94549         '82 Westfalia
> ---------------------------------------------------------------
>
>

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