Designed to increase horsepower, improve responsiveness & acceleration. Increased engine efficiency and reduced engine strain. Lasts up to 80,000km before needing cleaning. 1.28 lb (0.58 kg) K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N drop in air filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N.