Upgrade your ride today with K&N's top-selling air filter! Here's why it's a must-have: • Washable and reusable: Save money and reduce waste with a filter that lasts the life of your vehicle. • High-Flow Design: Enjoy improved airflow, more horsepower, and superior performance. • 10-Year/Million Mile Warranty: K&N stands behind their product, giving you peace of mind. This drop-in replacement filter installs easily in your factory air box. It fits 2019 - 2021 Subaru WRX STI Base and Limited models, as well as the 2019 WRX STI S209. Don't miss out on better airflow and power - order yours now!

This K&N air filter is perfect for Subaru WRX STI owners who want to boost their car's performance. Whether you're a daily commuter or a weekend racer, this filter will improve your engine's efficiency. It's designed to fit specific 2019 - 2021 Subaru WRX STI models. It's a drop - in replacement, so you can install it easily in your factory air box. And with its washable and reusable design, you won't have to worry about replacing it often. Enjoy better airflow and more power on the road or track.