For Nissan 300ZX Full Aluminum 2-Row Racing Radiator - Z31 Z32 Constructed of High Quality T-6061 Aluminum Construction. High Performance JDM Spec. 2-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: 23.75 x 19.50 x 2.50 Inch. Core Size: 19.75 x 18.50 x 2.00 Inch Inlet/Outlet Diameter: 1.50"/ 1.50"