I bought a couple from Van Cafe:

http://www.van-cafe.com/home/van/page_701_610/center_cap_for_alloy_wheels.html

On Fri, Jan 16, 2009 at 11:52 AM, Gregory S. Morrison <
gsm@gregorysmorrison.com> wrote:

> (1) Does anyone have an extra hub cap or two for the optional alloy Vanagon
> wheels circa late 1980s? It's the plastic, brushed silver cap that's about
> the size of a one cup measuring cup. Please contact me off list if you can
> help.
>