Thanks for the replies. I found the header bolt hole that it fell out of. Is there anyway to make sure they don't fall out? I checked all others and they seem pretty snug. This one however would not tighten and kept spinning. Seems like the bolt hole is stripped?
Every time I am under the hood for anything, I always check them. They make different types of locking bolts. I would check how deep the bolt hole is and if you have room, you could get a bolt a little longer, some of them bolts are kinda short and do strip out the bolt hole