K&N Engineering was founded in 1969 by Ken Johnson and Norm McDonald in Riverside, California. The company became famous for inventing the oiled cotton high-flow air filter, designed to perform in challenging environments like dusty off-road racing. This innovative filter not only effectively captures contaminants but is also washable and reusable, features that have made it popular among motor enthusiasts. K&N expanded its product line to include air intake systems, oil filters, and other high-performance parts for cars, trucks, motorcycles, and even industrial applications. Today, K&N is globally recognized as a leader in automotive filtration, with manufacturing facilities in Europe and China, and remains actively involved in motorsports, supporting teams and competitions worldwide