What's this bolt do?

[rockryno]

Quick question - what does this bolt do internally? Does it adjust anything?

[Jonny042]

6mm bolt for early style heat exchanger mount, I think.

[Walt Fricke]

I think so too - it is a stud, not a bolt.

[BR-549]

I have no idea what that bolt is or what it does, but that is one nice looking undercarriage. Just a sight to behold.

[75 911s]

^ Good to see I'm not the only one who had to bend the tab over on the right side to fit an early case.