> I only sell the more pricey O2 sensor for the Digifant system because it
> already has the plugs on it and you can just plug it in.  The other one is
> cheaper but if you splice this oxygen sensor incorrectly it will
> cause more problems than it solves.

With all due respect to Ken, I have to disagree here.  Bosch often sells
identical 02 sensors with different plugs on the end, to fit different
wiring harnesses. They price them at vastly different prices, depending
partially on how many they make/sell with that particular plug on the end.
The one for the 2.1L Vanagon happens to be more expensive than many of its
identical twins with other plugs, costing about 3x as much as the lowest
priced interchangeable sensor.  As long as you do a thorough job splicing
the plug from your old one onto the new one, you will get the identical
performance from the cheaper equivalent at a fraction of the price. (Once
you've spliced the other plug onto it, you've effectively got the same
sensor anyway.)  I offer both versions on my website, but sell the cheaper
$39 one about 20 to 1 over the "correct" one, because of the huge price
difference.  Personally I couldn't see spending 3x the price to avoid a
simple splice, which is so easy to do.

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