This AEM cold air intake system is perfect for Subaru enthusiasts who want to enhance their vehicle's performance. Whether you're cruising on the highway or hitting the track, this system will give your car a power boost. It's designed to fit 2008 - 2014 Subaru Impreza WRX and STi models. The system includes an oversized air filter and a custom heat shield. Installation is quick, usually under 90 minutes, and the filter can last up to 100,000 miles under normal highway driving conditions.