I just fired up the car after sitting for a few years and after pulling back in the garage I noticed a bolt sitting on the ground. It was laying around the back of the engine area. I haven't had a chance to jack the car up yet, so I figured I'd give you guys a chance. There is also the chance that I dropped it a long time ago and it finally fell out...

Motor mount bolt that goes through the pan perhaps? Stock alternator mount?





Heres the engine bay

 

alternator bolt?

 

or starter but since there is no alt in there I'm gonna go ahead and asssume alternator

 

UIM Long Bolt?

 

The alternator is now a side mount low where the AC used to be. It could have fallen out then.

 

M8x1.25x145 ish?

 

Is it the Long starter bolt?(that hold the starter to the Engine and bell housing?).it looks to be about that long.

 

Looks like the long starter bolt.

 

i think it is the UIM bolt, look at the pic closely, it is missing

 

Long starter/bell housing bolt, vote #3.

 

that was an older picture of the engine. I put S5 manifolds on my S4 and the bolts were different. The bolt is an M14 I believe.

 

Long starter bolt, goes through starter hole, belhousing, rear iron, holds wiring bracket, nut. vote #4.

Also, the clean area on the threads suggests that's where the nut used to be on. I think the intake or alt. bolts would have a clean area near the end, no?

 

starter bolt, vote #5

 

alright thanks guys I'll scope it out on Wednesday. It was killing me not having the time to lift the car and not knowing what just fell off the car.

 

Vote starter bolt too. Trust me i seen it TO many times.. forgot how many i been through

 

First think I thought was the UIM bolt too...

edit: but how the hell would that rattle loose going that far up through gravity, unless it wasn't put back in

 

has to be starter bolt. The UIM bolt can't fall upwards out of its slot.