dreygata

Well, there's a first time for everything, and I have my first mystery bolt.
I discovered the bolt under my engine stand, which has my 87 924S engine partialy dismantled. The oil pan, crank cradle, crank, and lower balance shaft front cover are removed, but all of those bolts are accounted for as I have screwed the bolts to where they should go.
I think this bolt is from the top of the engine somewhere, as I thought I heard something fall out when I flipped the engine over to remove the crank. But after searching, the only missing bolt is from the plastic oil fill tube, but this bolt doesn't seem to fit it.
So does anyone recognize this bolt? This car is fairly new-to-me as I picked it up back around the beginning of October, and has been sitting since around mid November due to a shredded #1 rod bearing.
Edit: It's possible that this came from something else in the engine bay, as I had to pull the engine out myself

thomasmryan

Sensor bolt.

dreygata

AH HA! It looks like the speed reference sensor bolt from the bellhousing. Not sure how it fell out but thanks! Mystery solved!