> I have these:
>
> http://www.hubcapzone.com/hubcaps/factory/vw/61508.jpg
>
> and want to install these:
>
> http://en.wikipedia.org/wiki/File:VW_Type2_T3_Kombi.jpg
>
> The hub caps I got from Craigslist are supposed to be what
> is shown on  the red Vanagon above but they are too shallow to
> clear the grease cap and the wrong diameter for the wheel.

There are several versions of the chrome VW hubcaps.  The earliest ones,
which are more rounded in look, will not fit Vanagons at all (nor Buses
after 1970). Among the versions that fit 1971 and later Buses, there are two
different ones that look almost exactly the same. The earlier ones were
slightly shallower and won't clear the Vanagon hub. (If my memory serves me
correctly they will fit the rear of a Vanagon but not the front.)  That is
apparently what you bought. The later version of the "1971-up" hubcap looks
almost identical unless you see the two side by side, but is a fraction
deeper and therefore fits both Vanagons and Buses.

If you wanted to buy them new, these ones (at $19.95 each) fit Vanagons:

http://busdepot.com/details.jsp?partnumber=251601151A

- Ron Salmon
  The Bus Depot, Inc.
  www.busdepot.com
  (215)  234-VWVW

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Toll-Free for Orders by PART # :  1-866-BUS-DEPOT