For Chevrolet 3000 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: 22.75 x 25.5 x 2.5 Inch. Core Size: 19.75 x 20.75 x 2.25 Inch Inlet/Outlet Diameter: 1.50"/ 1.75"