For over 50 years, K&N® has been an industry-leader in automotive filtration and technology - offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide. K&N® is headquartered in Riverside, California, in a building complex spanning nearly 400,000 square feet, and also operates facilities in Grand Prairie, TX, England, China, and the Netherlands. K&N facilities include departments for engineering, product design, manufacturing, warehousing, test facilities, purchasing, sales, customer service, marketing, and corporate offices.