Hello,

I have searched this part as used locally - to no avail. I need to buy a
new one.

Is this the right one, the same as used on RD-1C ?
http://www.ctpowertrain.com/servlet/the-239/C6-E4OD-4R100-NEW/Detail
I think this rear unit was 3.17, not 2.85 as in RD-1C (front?)

I know that this part code topic is discussed before - just that I moved
and don't have access to newsletter archives just now. Please bear with
me :)

Cheers,
Petri

That looks like the rear planet carrier.
That rear planet carrier will give you 3.17 for the same
direction in and out. Ring gear held stationary.

What I think you want is the front planet carrier. 2.85:1 same
rotation direction for in and out. Ring gear held stationary.

Try http://www.slauson.com/

Paul Lamar