Does any one know what thread size is the extra bung hole that comes with the cat delete from ultimate racing for the x ?

I know it's the standard size for a wideband, but i just don't know it. For some stupid reason i lost the little nut that goes in there and i need to buy another one, thanks.

 

hmmmm.....nope....but for the $, buy a crap load of bolts (I'd stick to std sizes, not metric) and see what fits-bolts are cheap

 

if it's the same as the o2 sensor, it's 18mm... try a spark plug if you have one to test it (since they are the same thread).

Also, PM Darryl, he responds pretty quickly

 

The spark plug also was my though, but i think i'll pm daryl still