It's because the connector is different.  I got the one my FLAPS had
onhand ... which meant I had to cut the connector off and use my old
one.  Still, the sensor itself works great.

Mike

TC wrote:
> odd that part does not match 83-85  REA1337 or 85+ REA1143 according the
> part locator
>
>
>> Hi Thomas,
>>
>> It's an OE XTRA brand Part# REA1001.  It fits multiple vehicles (VW was
>> not included because of the connector).
>>
>> You can go to www.oextrabrand.com and search for part number REA1001 and
>> it should come up.
>>
>> Mike
>>
>>
>>
>> thomas LaPointe wrote:
>>> the link you gave does not work correctly.
>>> at the flaps, what vehicle was this O2 sensor supposed to fit?  part
> number?
>>> On 10/25/07, *Mike Collum* < collum@verizon.net
>>> <mailto:collum@verizon.net>> wrote:
>>>
>>>     Hi all,
>>>
>>>     I just returned home from a trip to southwestern Virginia via
> BusDepot
>>>     (no ... I couldn't be there for buses by the Depot) and I averaged
> 20.84
>>>     mpg in my '85 1.9 Westy.  That's the average for the entire 2,712
> mile
>>>     trip which included hills, some city driving, and some periods of
> going
>>>     70 mph so as not to become a road hazard.
>>>
>>>     The morning I left I replaced my bad O2 sensor with one from VIP (a
>>>     flaps) which cost me $16.00.  I cut off the connector and spliced in
> the
>>>     VW female spade.  Here's the one I got:
>>>
>>>     http://www.oextrabrand.com/web_app/oex_bgbulk.aspx
>>>
>>>     In that the Westy performed flawlessly and the mileage figures were
>>>     pretty good, I'd say it was a good choice.
>>>
>>>     Mike
>>>     Houlton, Maine
>>>
>>>
>>>
>>>
>>> --
>>> 1985 Full Westy "Rustfalia"
>>> 1982 Full Westy "dead engine"
>>> 1991 GL
>>> 1972 Honda Z600 2 cyl
>