Nut size on Exhaust manifold/header?

[Sean76]

So I am apparently missing 3 nuts that hold my header on. No idea how. The studs are there and don't want to pay the $23 for entire kit just for 3 nuts. Can anyone tell me the size needed?

 

[Samurai_Blue]

its a 12mm just go to a junk yard and get them

 

[da9 b20 beast]

its a 12mm just go to a junk yard and get them

exactly fuck the 23 bucks..head down to the junkyard

 

[hgocasca]

Ha ha, having to deal with fitment issues with my header multiple times in the last month, I'm able to 64245211690023% confirm its 12mm. Dylan ftw!