Why Buy a K&N Filter? Designed to increase horsepower and torque Easy to install design Durable, washable and reusable air filter Limited Warranty up to a Million Miles Lasts up to 50,000 miles (80,467 km) before service is required (depending on driving conditions) K&N Reusable Air Filter A replacement K&N air filter is designed to improve vehicle performance, provide excellent engine protection, and last the life of your car, truck, motorcycle, ATV and more. K&N air filters are easy to install and worry-free with the K & N® Million Mile Limited Warranty. K&N Air Filters are Engineered to Increase Horsepower K&N automotive air filter replacements are designed to add horsepower and acceleration to your car or truck by providing 50% more airflow. More airflow can result in a smoother jog response and more torque in the engine's RPM range. K&N air filters are made from multiple layers of greased cotton filter media that not only provide superior airflow but are also excellent filtration to ensure long engine life. K&N Air Filter are Easy to Install K&N air filter replacements are made for virtually any normal or off-road vehicle and are specifically designed to fit the design of your vehicle's air box. Instead of changing your old paper filters over and over again, with K&N you simply put in a replacement K&N air filter every now and then and you have increased the life of your vehicle in just 5 minutes!