K&N Drop-In Filter Subaru WRX / STI 2002-2007 | 33-2232

Part #: 33 - 2232. K&N's replacement air filters for Subaru WRX and STI are a game - changer. They boost horsepower and acceleration while offering top - notch filtration. These custom - designed filters fit right into your factory air box, ensuring quick and easy installation. They come with a Million - Mile Limited Warranty. Using oil for filtration, these filters can be easily washed and recharged with the K&N cleaning kit (sold separately).

Using this K&N drop - in filter is super easy. Just take out your old air filter from the factory air box and put this new one in. It's designed to fit perfectly. When it comes to maintenance, keep an eye on its dirt level. Once it gets dirty, you can clean it using the K&N cleaning kit. Make sure to follow the instructions on the cleaning kit. Remember, this filter uses oil for filtration, so don't over - clean it. And the best part is, it's covered by a Million - Mile Limited Warranty, so you can use it worry - free.