Factory Exhaust Manifold To H Pipe Stud

[wuaname]

Hello all, first post, long time Mustang owner.

In the process of installing the BBK h pipe on my '98 GT 5M Having trouble getting the size for the passenger side stud factory manifold to H pipe. I read the following size “Factory M10x1.5 threaded studs", but when that's too small.

I am wondering if anyone know what size stud I need. This morning I found in the archives M12 - 1.75 x 62mm. Could be since the 10's were too small. Can anyone confirm the size of these studs?

 

[squeak93]

Take one of the nuts to a hardware store and validate. I think the m12/1.75 sounds right though. I usually just replace with a bolt, it sucks to get it up there but I've never had any luck finding a stud locally to replace it.