when vw improves or modifies the original part they add a letter to the
end starting with A and working up for every revision.  all of the parts
should work reasonably the same.

jonathan

On Sun, 8 Oct 2006, Jeff Oxroad wrote:

> Here's one for you in the advanced class.
>
> Half price at the Pick and Pull today in Sunland,CA (near LA). Only one
> Vanagon passenger Van. I grabbed an ECU off the 84. The part number on it is
> 025-906-021C.
>
> ETKA list the ECU for my 83.5 as 025-906-021.
>
> IF I search the part number of the ECU I grabbed today (025-906-021C) ETKA
> says "could use 025-906-021"  I guess that means the one with "C" suffix isn't
> available (?)
>
> When ETKA says "could use" it makes me think of a camping trip where you
> forget to pack a church key and you "could use" a car key. I mean the car key will
> work, but not optimal.
>
> Anyway what's the application for the 025-906-021C and is it interchangeable
> with 025-906-021? What's with the suffixs in this particular case?
>
> Thanks.
>
> Best,
> Jeff
> 83.5 Westy
> LA,CA
>
>
>