-10AN Aluminum, male fitting to bolt to your turbo oil drain flange.
These used to be called the standard "GT-Series" for the Garrett, but so many turbo companies are using these on whatever they want these days, it's hard to put a label on them anymore! So just check the dimensions before you buy.
This "GT-Series" flange (left) is the same as the Mitsu flange, but the GT thread holes are bigger (measuring just under 3/8").
