Koyo Aluminum Radiator Subaru WRX / STI 2003-2007

Specifications:Full aluminum radiatorCore Depth: 1.400"Core Height: 13.40"Core Width: 25.50"Item Weight: 11.8 pounds**Radiator cap not included. The factory radiator cap will more than likely fit. The Koyo SKC-13 radiator cap is compatible and sold separately. Features: True plug and play installation; No engine modifications necessary and retains mounts for the stock fan shrouds and fans. Hand crafted heliarc welds for stronger enforcement along aluminum connections All Koyorad Hyper V-Series All Aluminum Radiators are Nocolok brazed. (What does that mean?) Learn more here: The NOCOLOK® Flux Brazing Process Developed specifically for vehicles which see extreme heat, are limited in space, and where the factory inlet/outlet locations eliminate the option for a proper N-FLO design. The Hyper V Series radiators have a specially designed fin and tube pitch which significantly increased its surface area while still allowing for excellent air circulation through the radiator.