For Nissan Datsun 510 Aluminum Racing 2-Row Radiator+9" 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: 21.75" x 15.25" x 2" / Core Size: 19.25" x 10.5" x 1.75" / Inlet/Outlet Diameter: 1.25" / 1.25" Fan Aids to Cool Down the Entire Engine Bay: Including Radiator, A/C System, Intercooler, Oil System, and Transmission Fan Diameter (in): 9.75" / Maximum Fan CFM: 1730 cfm / Maximum Fan RPM: 2,250 rpm / Thickness (in): 2.5" / Amp Draw: 12.70 amps