What size are they bolts holding the exhaust manifold on?

 

Uh what car? Probably a 12mm though.

 

if you need help with this, you might want to post what engine you would be bolting the exhaust manifold to....just a hint

 

wow Im a retard sorry guys its a b16a2.

 

not sure of the bolt size and thread pitch, but on my b18 its a 12 mm nut thats screws on the bolt to hold the mani on, you may want to reference a service manual or hope that someone else has that info if you're looking for the actual bolt in the head to purchase at a local hardware shop...it might be easier to cll honda for that one if thats what you need