👉 The word "K&N" stands for Kornfeld and Nordenboe, two German-American companies that specialize in automotive engineering. The first part, K & N Engineering, refers to the company's focus on designing innovative engines, transmissions, and other components for automobiles and trucks. Kornfeld (originally known as Karl Kornfeld) is a key figure behind the development of the Rolls-Royce engine, which revolutionized automotive technology. The Nordenboe name represents the company's roots in Norway, where Karl Nordenboe first discovered engines during World War II for military applications. The word "K&N" was a play on two German terms - Kornfeld (a surname) and Nordenboe, which meant 'oil' or 'noble oil.' The term K & N Engineering reflects the company's commitment to innovation in its design of engines and transmissions.