84-01 Jeep Cherokee XJ Extruded Core Aluminum Radiator by Cold Case Radiators1984 2001 Jeep XJ Aluminum Performance Radiator with extruded core for maximum durability. Direct fit for 91 01 Cherokees. 84 90 models will have to convert to '91 01 style overflow. This radiator uses a custom to Cold Case 41mm extruded core with four cooling flutes for maximum strength and coolant flow. Unlike intercooler cores the Cold Case extruded tube mirrors those of a standard radiator giving them an aero advantage, while raising the burst