Go to BusLab in Berkeley.  Marco and Steve are Vanagon experts.  They
are at 2036 Blake Street, just west of Shattuck.  Their shop is also
walking distance from the Berkeley BART station.

You might even get some good advice while they sell you the part.
They also have some used parts for sale.

If you are too busy or not experienced enough to work on your own
van, they are excellent mechanics.

http://www.thebuslab.com/

>I'm newly moved to the bay area (Oakland) -- can anyone recommend a
>local part shop that would have 'em in stock?  Dealer wants 5 days
>and $186 for the HE Sensor alone.    Vanagain and Busdepot have
>entire distributors (rebuilt) for around $150...