driving home from work i hear a loud THUNK from my drivers side underbody somewhere.. i pulled over and i found a large bolt..
on the top its labeled "m 8.8" it looks like a 12-14 millimeter at least and its about 2-3 inches long.. anyone have any ideas?

car still runs so im not too worried.

think i mighta just kicked up a random bolt? it was in front of an acura dealership..

 

I'd check all your tranny bolts and mounts and give the undercarriage a glance.