Caterpillar, C15 Generator Gen-Set, Complete Radiator, (IR-CAT C15, 297-4283, Radiator only # is 297-4282, CAC # is 277-6221, 230-3807, 230-3808, 256-6164, 256-6165, 297-4284, 297-4285, 228-4380, 230-3807, 230-3808, 256-6164, 256-6165), Radiator & Charge Air Cooler Combo