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're engineered to boost horsepower and speed up acceleration, all while offering top - notch filtration. These filters are custom - made to fit right into your existing factory air box, so installation is a breeze. And for street vehicles, K&N stock replacement air filters come with a Million - Mile Limited Warranty. K&N Filters use oil for filtration and can be easily washed and re - charged with the K&N cleaning kit (sold separately). Part Number: 33 - 2232.

Using your K&N Drop - In Air Filter is 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, so there's no need for any complicated adjustments. When it comes to maintenance, check your filter regularly. Once it gets dirty, you can use the K&N cleaning kit (which you need to buy separately) to wash it. Just follow the instructions on the cleaning kit. After washing, let it dry completely and then re - oil it. Remember, this filter comes with a Million - Mile Limited Warranty, but make sure to follow the proper maintenance steps to keep it working well and to keep your warranty valid.