Hi,
the Walloth&Neesch replacement part is a tad different vs original.
The original, as in your pic, is one part inserted from the wheel side. It was installed with the cable factory crimped.
The new cable is a seperate part with a mounting flange. The metal block with the 2 mounting bolts is a seperate part.
First install the metal bloc on the wheel side, then slide the cable from the diff side with its mounting plate over the bolts and secure with 2 nuts.
See link with some more explanation.
https://www.e9coupe.com/forum/threads/fixing-that-little-rustspot.18521/
Read post #8, 10 and 12.