This is a dual remote bypass system made by Amsoil. This allows you to run a dual filter where one filter is the regular full flow and the other is a finer bypass filter. Together with the hose length I used to mount it where I did, it bumped my oil capacity up a little more than 2qts. This was on a 2005 5.4l Triton in an F150 and I saw no need to let the dealership have it on trade in :)
IF you have a vehicle that takes that truck's filter then I have the spin-on adaptor for you and if not then you will need to get a suitable one from Amsoil...or maybe call them and see what else this one fits because it may be a wider range than I know. Everything seen in the picture is included. You will need to purchase new hose because I had to cut mine to get it out in a hurry...and you wouldnt want old hose anyway.