Any idea where this broken bolt came from?

[Jonathanred6]

Found this bolt under the engine bay of my 2017. It fell out after taking my car down from ramps while doing an oil change. Recently had my rear motor mount fail and had to drive home with the engine bonking around for a bit. Seems like it could possibly be related to that?

 

[atlantaM3]

Looks like an exhaust manifold stud

 

[Capri to ST]

You could try a Google image search.

 

[sczamun]

Found this bolt under the engine bay of my 2017. It fell out after taking my car down from ramps while doing an oil change. Recently had my rear motor mount fail and had to drive home with the engine bonking around for a bit. Seems like it could possibly be related to that?

View attachment 69235

Exhaust manifold or maybe downpipe

 

[arlisscm]

Looks like an exhaust manifold stud

Exhaust manifold or maybe downpipe

^+1 on these. Could be an exhaust manifold stud, downpipe stud or turbo to manifold stud (they are all basically the same). If the RMM failed, then functionally the connection between the exhaust, downpipe, turbo, and manifold is what was predominantly limiting the movement of the engine, which could break something.

 

[madhatter]

and it'll be broken off in the head if its a manifold stud. or in the turbo if its the exhaust. a pain to remove. sorry.

 

[Zeille]

exhaust manifold stud 100%. speaking from experience as i had two broken studs that got extracted this last weekend. doesn't look like it's broken off too deep, but you do have to pull the manifold to fix it. honestly, go aftermarket on the rear motor mount and get it lined up well and proper before bolting the downpipe to turbo and downpipe to midpipe. i have to mess with my RMM or my downpipe as it doesn't line up one bit, and i'm at risk of breaking more studs myself