The K&N Universal Clamp-On Washable Air Filter RU-4870 is a high-performance air filter designed for direct replacement in cars and trucks. With a 2.75" flange, 6" base, and 5" top, this filter offers a universal fitment for various vehicles. Made in the USA, this filter is manufactured by K&N, a reputable brand known for producing quality automotive parts. It comes with a manufacturer warranty and is specifically designed to improve air and fuel delivery, making it a valuable performance part for car enthusiasts looking to enhance their vehicle's performance.