Andrew,

The Bosch O2 sensor is not a generic replacement, it is a Bosch Part for
a Ford with the connector removed or not.  I used it once but it failed
rather quickley,  less than 2 monthes, but of course took me awhile to
pin down the intermittent failure. Others have reported no problems. The
price is low, but at the 2nd purchase cost you could just buy a another
brand O2 Sensor for the Vanagon.

I'd recommend a Vanagon Specific O2 Sensor that is Made by Beck Arnley
#21-156-8300.  I paid $126 cdn or $90 Us. It has been flawless.

Sincerely,

Mark Keller
91 Carat
Cowichan Bay
Vancouver Island
British Columbia