Alan, Thanks for the information. Unfortunately, my AEGIS X3 precedes the CORELIGUID 240R AIO. There is no specific manufacturer label or part number on the unit, only the MSI dragon logo. This is making it difficult to find the specs for the pump's dimensions and whether I can use a third party product to fit in the case. Without pulling the AIO pump out of the case and physically measuring it, it looks like it is between 80mm and 92mm in size. I've attached the spec sheet for this PC but the one thing it doesn't show is the cooling unit specs.