I am not sure of the specs on it but it has a Chrystler tag on it and a dsm symbol is casted into it. It says 8g in two places. And also it says TE04H if that helps. I ran it on my hatch with a zc in it at 8-12psi and had no problems at all. It is relatively small in size but made my 1-2-3rd gear worthless with a set of steelies. Just upgraded to a a/r .47 t/3 so I just don't need the other one anymore... Thanks for your time