Koyo Aluminum Racing Radiator (08-14 WRX & 08+ STI)

  All aluminum construction Heli-arc welded for stronger enforcement along aluminum connections Thicker core Precise tube and fin alignment promotes optimal coolant flow and fins with highly efficient heat transfer NoClock Brazing is featured on the tubes, fins, headers and brackets using a state-of-the-art NoClock furnace which bonds all components to resist damage from vibration, road debris, and the elements Billet Filler Neck is precision machined for durability Fits manual transmission