VH091672. Fitment: This high - performance radiator fits all Subaru Impreza WRX from 2003 - 2007 and Subaru Impreza WRX STi from 2004 - 2007. Note that it's suitable for all WRX/STi models from 2003 - 2007. Automatic transmission owners, check the notes below. Specifications: It's a full - aluminum radiator with a core depth of 1.400 inches, a core height of 13.40 inches, and a core width of 25.50 inches. It weighs 11.8 pounds. The radiator cap is not included, but the factory radiator cap likely fits, and the Koyo SKC - 13 radiator cap is compatible and sold separately. Features: It offers true plug - and - play installation, no engine modifications needed, and retains mounts for stock fan shrouds and fans. It has hand - crafted heliarc welds for stronger connections. All Koyorad Hyper V - Series All Aluminum Radiators are Nocolok brazed. Developed for vehicles in extreme heat and with limited space. The Hyper V Series has a special fin and tube pitch for increased surface area and excellent air circulation. Automatic transmission owners: This radiator doesn't have an internal transmission cooler. If you have an automatic - transmission car, you'll need to buy an auxiliary transmission cooler.
Using this Koyo radiator is a breeze. Just install it as a plug - and - play unit in your Subaru WRX or STI from 2003 - 2007. No need to modify your engine. Make sure to check if your factory radiator cap fits. If not, you can buy the compatible Koyo SKC - 13 separately. For automatic transmission cars, remember to get an auxiliary transmission cooler before installation. As for maintenance, keep an eye on the radiator's overall condition regularly. Check for any signs of leaks or damage. Also, make sure the air circulation around the radiator is good to keep it working efficiently. If you notice any issues, it's best to get it checked by a professional.
