This is a CT-26 series turbo oil drain fitting. This fitting allows you to build custom oil lines to your new 57 trim or 60-1 trim Hybrid CT26 turbo setup. This is a mandatory part if you want to ditch the stock Toyota turbo oil lines. Make sure to specify -3 or -4 supply fitting in the options. Works perfectly with the factory gasket. Every detail has been considered, the machining is very high quality.