XDP Xtra Cool Direct-Fit Replacement Radiator 1999-2003 Ford 7.3L PowerstrokeThe XDP Xtra Cool Direct Fit Replacement Radiator XD538 is a high quality replacement for the leaking or failed unit in your 1999 2003 Ford 7. 3L Powerstroke. The Xtra Cool Radiators give you a direct fit replacement with special construction techniques borrowed from the HD and semi truck industry. Extra steps taken during manufacturing ensure additional strength and durability to protect your engine and cooling system. Factory radiators often fail