For Mazda RX-7 Full Aluminum 2-Row Racing Radiator - FD FD3S Made of High Quality Full T-6061 Aluminum Construction Stronger & Higher Capacity for Coolant than Stock Units / Light Weight Direct Bolt-On OEM Fitment or Replacement High Performance 2-Row Racing Design / Improves Cooling by 35 - 45% Temp. Overall Dimension: 25 x 15.75 x 2.875 / Core Dimension: 24.5 x 12.25 x 2.25 / Inlet: 1.5" / Outlet: 1.5" Application: Please Check Part Finder On Top of The Page (Professional Installer is Highly Recommended No Instruction Included)