aFe Pro Dry S Drop-In Air Filter Subaru WRX / STI 2008-2021 | 31-10161

Part #: 31 - 10161. Upgrade your Subaru WRX with the aFe Pro Dry S drop - in air filter. This high - flow, oil - free filter outperforms Subaru's stock paper filter, boosting horsepower and torque for your EJ25 - powered WRX. Composed of two layers of synthetic media with finer meshes, it offers easy maintenance and maximum airflow for top - notch performance. It's washable and reusable for multiple cleaning cycles. The tall, evenly - spaced pleats hold a large amount of dust, extending the service cycle between cleanings. The urethane bump seal ensures a tight, leak - free fit throughout the filter's lifespan.

Using this aFe Pro Dry S air filter is easy. Just remove your old air filter and drop this one in. Make sure it's properly seated and the urethane bump seal is in place for a good fit. When it comes to maintenance, keep an eye on how dirty the filter gets. You can wash it with a mild soap and water solution when it's dirty. Rinse it thoroughly and let it dry completely before reinstalling. Avoid using harsh chemicals as they may damage the filter media. With proper care, this filter will serve you well for a long time and keep your Subaru running at its best.