I've got a friend that's doing a TIKIT Performance upgrade to his Z06. The kit includes a Setrab engine oil coolers but he decided to use two GM OEM coolers for his own reasons.

He's running the -10 braided lines from the engine side with AN fitting to the stock cooler. But obviously the stock cooler has a different push to lock type fittings and he needs to adapt the cooler to work with -10 AN line.

The question is. What's the thread size on the cooler side with the O Ring? it's not NPT from the looks of it, is it JIC? if so does anyone have any specific size for the thread or a link to the appropriate fitting that would be greatly appreciated.

It should look like this

The black fitting is the one needed but we don't know it's size