Need some advice regarding door lock for my 2002 ML270 (australian).
Right rear door lock part numbers...
163 730 2235
and
163 730 2435

Is there a difference between these two parts or just simply a case of one number superseding another ?
I found both these numbers on the russian site.
My local dealer insists that I must use the 2235 part.

No one seems to have the 2235 part in stock, but lots of places have the 2435 part in stock.
Why would there be two different door locks for basically the same chassis/door setup.?

VIN number WDC1631132A292*** (last three digits omitted)

Would appreciate some input before I take the plunge and order the wrong part.
many thanks