One New Aftermarket Blue Bird Fits International Radiator 31 x 12 18 x 1 78 Models 19931996 3000, 3600, 3800, 4900 SERIES, SCHOOL BUSTech InfoCORE HEIGHT 31CORE WIDTH 12 18DEPTH 1 78INLET 2 12 UPPER CENTEROUTLET 2 12 LOWER RIGHTOIL COOLER NOCOPPER BRASS CONSTRUCTION3 ROW, HALF CORE RADIATOR, STRAIGHT OUTLETFOR 4 ROW VERSION SEE 238501Replaces Part Numbers 1659054C93, 1002249, 3A8119D2, 1696919C2, 2022892C92, 3A48119D2, 2022893092, 1659054C91, 1696919C1, 11C8798, 2022893C92, 2022892092, 1696919C3, 1659054C92