TR : [urq] Diff lock actuator alternative from MB W123

Louis-Alain Richard laraa at
Wed Dec 5 18:27:14 PST 2007

I don't remember who asked me if they fit, but the definite answer is yes.
I've just installed them last night, all I had to do is thread the shaft to
4mm x 0.7 mm with a die, making sure one will clamp the shaft with a
vise-grip to protect the diaphragm from the twisting forces. 

So the 40$ Mercedes part (#000-800-69-75 or 123-800-33-75) will replace the
857 711 995A on any car that use them. 


> My original post from 09-26-2007:
> Hi everyone,
> I just received today these 2 door lock actuator from a Mercedes-Benz
> (W123> chassis),
>  and they look they will easily replace the leaking diff lock actuators on
> my urQ. Here in Canada, this part is over 200$ at the dealer.
> I will have to thread the shaft to install the Audi u-shaped bracket, and
> the 3rd hole will not line up readily, but these are easy mods to perform.
> The plastic adaptors are easily removed to expose the shaft.
> I don't know how much they are in the USA, but if you want to get new
> ones, this guy sells them for 40$ each.
> Now, maybe they are not as durable as the white-plastic Audi version, but
> both are made from the same company, the one whose logo is an A.
> Anyone knows if white=nylon and black=plastic?
> Louis-Alain
> 1983 urQ

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