Scott, I sell rebuilt ECUs for the Vanagon and have for many years.  I
even sold the performance 1.9l ECUs for a while.  People get all weird
sometimes when buying an ECU.  They will insist on the exact same part
number they have, and also the same manufacturer.  They want a certain
style of body on the ECU (plastic or metal).  What it all boils down to
is this.  Any Vanagon 021 ECU will work in a digijet waterboxer Vanagon
83.5-85.  Any Vanagon 022 ECU will work in a 2.1l Vanagon digifant.
Believe me I have tried every combination you can imagine over the years
and they all work fine.  If the guy is asking for a 021 C he can use any
021 ECU.  I have a pile of them sitting here.  I sell rebuilt Vanagons
ECUs for $250 plus $100 core charge.  Just FYI.

Ken Wilford
John 3:16
www.vanagain.com

Scott Daniel - Turbovans wrote:
> 'normal'  1.9 waterboxer engines .......for US models, 1983 to 1985
> use the
> common 025 906 021                ECU.
>
> someone is calling me wanting a 025 906 021 C     ( 'charlie' suffix )
> ECU.
> which I'm guessing is for a non-US model ??
> anyone run into this ?
>
> and,..........additoinally...............the ECU the person is after is a
> Triumph-Adler brand, not a Bosch .......
> are TA & Bosch brand ECU's interchangable  ? .........I figure they
> are if
> the part number is the same - but any thoughts on that are appreciated.
>
> thanks,
> Scott
>