This Perrin drop - in air filter is a game - changer for your Subaru. It fits 2008 - 2021 Subaru WRX, 2008 - 2018 Subaru STI, and 2005 - 2009 Subaru Legacy GT. With a 2 - stage foam filtration element, it boosts airflow in your stock air box, enhancing power and torque while removing harmful particles from the incoming air. The open - cell foam filter, coated with special oil, catches dirt but lets air flow freely. It improves throttle response and is a breeze to install, taking just about 10 minutes. Plus, it comes with a 5 - year manufacturer warranty and can be cleaned and re - oiled for long - term use.
Using this Perrin drop - in air filter is super easy. First, open your Subaru's stock air box. Then, take out the old filter and insert the new Perrin filter in its place. It should fit snugly. Installation usually takes around 10 minutes. When it comes to maintenance, keep an eye on the filter's condition. When it gets dirty, you can clean it. Wash it gently with a mild detergent and water, then let it dry completely. After that, re - oil the filter using the recommended oil. This will keep it working at its best. Remember, always handle the filter carefully to avoid damaging the foam. Also, make sure to check the manufacturer's warranty details in case you have any issues.
