The pump is just screwed onto the radiator with a bracket, it's a DDC pump so the pump is not integrated per-se like in a standard Asetek AIO, which you could buy individually and is what some people use. You can literally buy all of the components the Predator is made out of separately, except the custom made bracket of course to hold the DDC pump and reservoir onto the radiator. It's got EK compression fittings, EK-Supremacy MX water block, EK 360 radiator, EK ZMT tubing, Laing DDC, custom reservoir, it's basically a custom loop that's been professionally assembled for you.