The one we disassembled had a different issue.
The worm gear wore through a section but the lower gear was intact and not worn like yours looks (and it still had all the teeth too).
If it is possible to reproduce with a 3D printer in a suitable material, the cost may be low enough to be practical.
Still a lot of if's though. __________________ 
98 318ti MSport M52, 88 M3, 97 M3/4 |