The online parts fiche (
https://nemigaparts.com/cat_spares/etka/volkswagen/va/4u/008100/) shows
that part number as N  011 153 1.

Looks like Bus Depot has it. http://www.busdepot.com/n0111531

Hope this helps.

-Mark

On Wed, Aug 21, 2019 at 3:35 PM Pat Spragge <spraggepat@gmail.com> wrote:

> I don’t normally post for help, but I’ve run into a part location
> nightmare.
> I have a 1989 Westy with a rebuilt engine and needed a jam nut for one of
> the valve adjust screws. Not thinking, I simply ordered one and when it
> arrived, realized it was too big. Seems my rebuild has 1.9 rocker arms and
> not the 2.1. So I need a 9mm-1.0 instead of the 10mm-1.0.
>  I am having no luck locating this part.
> Does anyone know of a source?
>
>
> Thx
> Pat
>