BOLT found in bilge - help me identify it please

[froeman]

I have a 2008 Larson 180 with a 3.0L Volvo Penta (GL?) motor. SX outdrive. There are 53 hours on the boat. I found this bolt lying in my bilge a few days ago. I only had time for a quick visual inspection, but I can't see any obvious places where a bolt is missing. The boat runs fine (as far as I can tell).

The bolt is 2.5" long.

CAN SOMEONE PLEASE HELP guide me where to check?

Thanks!​

 

[signusx1]

Looks like a starter bolt to me.

 

[Rattlin S]

If that bolt is 2.5" long, I'm guessing it's around 1/4" or 6mm diameter. I'd inspect your hose fitting that's mounted on the inside of the transom shield. It's what your interior cooling water hose connects to at the transom.

I don't have an SX and not sure which particular SX you have, but it might be #9 in this pic

 

[pokadoros]

It is from the pulley bracket and it screws to engine block with a spacer.