K&N Filters offers a line of replacement filters for the air intake system, oil, cabin and more. They also carry a line of performance parts for cars, trucks, ATVs and motorcycles. They even have watercraft performance parts. Their air filters and air intake systems are washable because they are designed using K&N’s reusable, high-flow cotton filters. Many of the filters are delivered with sealing grease that K&N developed to work effectively with the filters and increase the life of the product. K&N tests the filtering ability of our air filters using the ISO 5011 test procedure. In general, most K&N air filters will test between 97%-99% efficiency.
K&N opened their doors in 1969, and they have been working on making their filters better ever since. K&N is headquartered in Riverside, California in a complex of nearly 400,000 square feet. They also have facilities in England and the Netherlands. The work at these locations includes engineering, product design, manufacturing, warehousing, test facilities, purchasing, sales, customer service, marketing, and corporate offices.They have over 5,000 products for all modes of transportation and industrial applications. Their high-flow air cleaners need to be cleaned with their cleaner and air filter oil. When you buy a new K&N air filter, get the filter cleaner and filter oil spray kit sold separately.