I noticed while pulling off the oil pan last night that I am missing one of the three bolts on my drivers side exhaust manifold (LHD) where the manifold meets the pipe to the catalytic converter. Does anyone have any idea of the size of the bolt and nut? I suppose it probably really doesn't matter what size, as long as there is one there, but I was hoping for the sake of consistency to get the same size nut and bolt so that I don't have to go rummaging through my wrenches the next time I have to change my exhaust system.

 

It's a stud, not a bolt, if you want to keep it consistent. M8x25

 

Oh, that's odd. I have a hole straight through. I love living in the rust belt... Thanks ZG.

 

It's a stud that comes out. AB has them with pinch nuts, buy them instead if swapping in one, you will be happy.

 

Ok, will do. Thanks much.

 

your correct it is a bolt13mm