Can someone tell me the size of the bolt that attaches your b-pipe to the cat? I kinda broke mine off today and need to replace it. I know it a 14mm head, but that's all I know.

 

A standard metric screw, 8mm diameter, is 13 mm across the flats of the head. So I am going to gues that it is an 8mm bolt, or 5/16 inches. Gotta be close in there.

 

Anybody?

 

The size is a M12x1.25 pitch. Infact just about everything on this car is M_ x1.25 including the wheel studs. I replaced all my bolts with Pep boyx 10.9 grade metric bolts. The head however, was larger at 17 MM instead of 14.

 

That's odd, most 12mm bolts are 18mm across the heads? Also, 1.25 thread pitch is a standard pitch for 8mm screw/bolt