I think that is  Item R. Perhaps the california one, like Stan said.
Al Brase

Mike Jeffrey wrote:

>Hello listers,
>
>I'm looking for a replacement piece of tin for my 1983 air-cooled.
>It's the bottom left-side piece, that sits between the exhaust and the
>head. Most of my tin is in decent shape, but this one has aged rather
>poorly:
>
>http://www.michaeljeffrey.net/bus/required-tin.jpg
>
>Does anybody have this piece available?
>
>My spacial recognition skills are quite weak - I couldn't figure out
>which piece it was on the diagram at
>http://www.bus-boys.com/aircoolsystem.html#tin :)
>
>Thanks all!
>Mike.
>
>
>