For Chevrolet C/K Series Full Aluminum 3-Row Racing Radiator Constructed of High Quality T-6061 Aluminum Construction. High Performance JDM Spec. 3-Row Racing Design Light Weight Direct Bolt-On OEM Fitment or Replacement. Stronger & Higher Capacity for Coolant than Stock Units Highly Increase Cooling Performance Overall Size: 33.00 x 18.38 x 2.63 Inch. Core Size: 28.13 x 17.13 x 2.38 Inch Inlet/Outlet Diameter: 1.50" / 1.625"