The VH091672 radiator is a top - notch choice for your Subaru. It fits all Subaru Impreza WRX from 2003 - 2007 and WRX STi from 2004 - 2007. This full - aluminum radiator has a core depth of 1.400', core height of 13.40', and core width of 25.50'. It weighs 11.8 pounds. The radiator cap is not included, but the factory cap likely fits, and the Koyo SKC - 13 cap is compatible and sold separately. Installation is a breeze with true plug - and - play. No engine modifications are needed, and it keeps the mounts for stock fan shrouds and fans. It features hand - crafted heliarc welds for strong connections. All Koyorad Hyper V - Series All Aluminum Radiators use Nocolok brazing. They're designed for vehicles facing extreme heat and limited space. The special fin and tube pitch increase the surface area while ensuring great air circulation. Automatic transmission owners should note this radiator doesn't have an internal transmission cooler. You'll need an auxiliary cooler if you want to install it in your car with an automatic transmission.
Using this radiator is simple. First, make sure your car is turned off and cooled down. Install the radiator following the plug - and - play design, and you don't need to modify the engine. If you have an automatic transmission, install an auxiliary transmission cooler before putting in the radiator. When it comes to maintenance, regularly check the radiator for any signs of leaks or damage. Keep an eye on the coolant level and top it up as needed. The factory radiator cap usually works, but if you choose the Koyo SKC - 13, ensure it's properly installed. If you notice any issues like overheating or reduced cooling performance, have it checked by a professional.
