An internal combustion engine must take in air in order to work properly. With out air, your engine literally chokes just like a human being would do without air to breath. That air that the engine uses needs to be as clean as it is possible to make it. Air that is full of dust, dirt, and outright gunk does not let your engine work up to its full performance potential. An Accel air filter provides you with superior, high performance filtering. This air filter is TUV certified to be 99 percent efficient. Particles that are as small as 2.8 microns can be effectively removed from the air with this filter. Accel's air filter has less rubber that bleeds into the cotton so the effective surface area is dramatically increased. You can get as much as 10 percent more air flowing into your engine compared to other filters. An Accel air filter saves you money in the long run as well. Instead of having to continually replace this filter, you came simple wash it and then reuse it. Make sure that your high performance engine gets every break that it can get. Allow it to receive a steady supply of air that is high in oxygen and low in particulates by installing an Accel air filter. Car hobbyists always want high quality assistance when considering good quality automotive parts. So of course we've created an always-online sales support hotline to support you with your calls. Everybody hates to pay for shipping, that's why there is 100% free shipping on every order more than $50. If you spot a lower price elsewhere, let us know - we will meet or beat any legitimate auto part price.