Fitment: This radiator fits 2002 - 2007 Subaru WRX and 2004 - 2007 Subaru STI with manual transmission. CSF's all - aluminum radiators for Subaru are the top choice in competitive motorsports. Trusted by race teams worldwide, they keep cars cool. Whether you're on the track, street, or in rally racing, this radiator is a must - have for high - horsepower engines and high - boost vehicles. It's also a great upgrade from the OEM plastic/aluminum radiator. Key features include a black finish for a high - end stealth look, 100% all - aluminum TIG - welded construction, CNC machined mounting brackets, a high - performance 1.4bar aluminum radiator pressure cap with an embossed CSF logo, a true 'drop - in' fit with no installation modifications, a machined all - aluminum race - style drain plug, a 2 - row 42mm ultra - high - performance core, 6.5mm tall multi - louvered fins with CSF’s exclusive B - tube technology, individual leak testing, a 2 - year limited manufacturer warranty, and a rigorous testing process during development including burst pressure, thermal cycle, vibration, and salt spray testing.




Using your CSF high - performance radiator is easy. First, make sure your vehicle is turned off and cooled down. Then, remove the old radiator carefully following your vehicle's manual. Install the new CSF radiator in the same place where the old one was. Since it's a 'drop - in' fit, you don't need to make any modifications. Attach the mounting brackets and connect all the hoses properly. Put the high - performance 1.4bar aluminum radiator pressure cap on. When it comes to maintenance, regularly check for any leaks. You can visually inspect the radiator and the hoses. If you notice any coolant on the ground or under the vehicle, there might be a leak. Also, keep an eye on the coolant level and top it up if necessary. Use the recommended coolant for your Subaru. If you're planning to store the radiator for a long time, make sure it's dry and clean. Avoid exposing it to harsh chemicals or extreme temperatures. If you have any issues with the radiator, contact the manufacturer as it comes with a 2 - year limited warranty.