If you have decided to install a high quality AEM cold air intake, than you already know about the significant power gains that can be had from a cold air intake. Cold air is denser than warm air, and the greater concentration of oxygen allows you to generate more power. However, you need to maintain your intake. Like any air box, the AEM cold air intake requires some level of maintenance, and that is why you need to take care of your AEM cold air intake filter. The AEM cold air intake filter is designed for specific use by that particular intake. Because it is not a generic design, you can be confident that it is carefully dyno tuned to allow the maximum amount of air into your engine while protecting it from harmful particles. Over time, your filter will become clogged, and the AEM cold air intake filter is designed to replace your existing filter, allowing your engine to breath properly. A clogged filter can really hurt your engine's power. To imagine what effect a clogged filter can have, place your hand tightly over your mouth and try to breath through it. That's what your engine will experience if you do not replace and maintain your AEM cold air intake filter. Automobile enthusiasts definitely deserve superlative help while looking at dependable auto parts. For our valued customers, we run a 24/7/365 service call center to support all your queries. Everyone hates paying for shipping, so all parts come with completely free shipping for each order $50 and up. If you spot a lower price elsewhere, give us a call - we always beat any price advertised elsewhere.