[Cerberus]

Hello,

I am hoping someone may know what size this bolt is (or even a GM part number possibly), so I can get a replacement. One managed to come out and disappear so I have a rattle.

This is for a 2007 Z06, w/factory muffler, but the photo is a base for reference.

torquetube

Why not take one out and measure? Looks like an 8 x 1.25 x something.

[Cerberus]

I was hoping to not take the other bolt out since the muffler valve is right underneath it and it is a bit of a chore to remove. I also was hoping to replace it with an OEM bolt.

If anyone else ever looks at this, it is a M6 x 25mm long bolt with integrated washer. I used a flanged bolt as a replacement and that worked well.

Ted Parsons

Thanks for this info. I noticed mine fell out and didn't want to remove the other one. That bolt was a pain to get tight, probably could have gone with a 15mm length.