For Chevy C/K-Series V8 Aluminum Racing 2-Row Radiator+12" Fans (Black)+Mounting Kit Made of High Quality Full T-6061 Aluminum Construction High Performance 2-Row Dual Core Racing Design / Improves Cooling by 35 - 45% Temp. Overall Size: 33.5" x 21" x 2.75" / Core Size: 28.25" x 19" x 1.75" / Inlet/Outlet Diameter: 1.5" / 1.75" Fan Aids to Cool Down the Entire Engine Bay: Including Radiator, A/C System, Intercooler, Oil System, and Transmission Fan Diameter (in): 12.375" / Maximum Fan CFM: 1730 cfm / Maximum Fan RPM: 2,250 rpm / Thickness (in): 2.5" / Amp Draw: 12.70 amps