female threads welded into the subframe

This is the rear mount hole as viewed from the top side. Clearly a mount bolt cannot be installed because of the obstruction from a bolt from other side.



How would you recommend that I fix this? Remove the bolt from underneath and get a shorter bolt ?

I assume that the bolt from underneath shares the same female threads.

According to EPC, my 4matic installs two of same part number 212-240-32-17

So that thing is a broken stud of the bolt.

If female thread is not rusty, it may be easy to spin it out .......of course with special tools for this kind of "rescue" work.

It looks too clean of break to be sheared off. Check out the thread marks on the engine mount.
Leads me to believe that someone put a load on the engine mount from underneath with the rear bolt installed.
This could explain the shearing. But that is a M8 bolt. Does not seem likely to occur


I was just wondering if was from an extra long bolt from the under side.

Well....one more extra task you must do , dang

Started the jobber yesterday.
HEX replacement is complete.
The broken stud is in work. started drilling for the extractor. I am not confident about removal as it seemed really stuck.

I wonder if that bolt was part of a subframe repair.
Check out the screen capture below #500 is a repair weld pin 000-990-12-10

I dont think so, because engine mount bolt has nothing to do with subframe bolt to car chassis.
Here is a 4matic subframe, no broken engine mount bolt


I think at one point in time the engine mount so worn out, it shake like crazy and broke the bolt.

Previous owner reported at 36k miles running over a truck axle from an accident ahead. Had to replace control arm, half shaft, one wheel, and the plastic covers. Very likely that caused the bolt to shear and nobody could see that.