It's no accident that K&N air filters are the best in the business--it's the result of lots of hard work and engineering. The same folks who brought you the high-flow K&N air filter have expanded their knowledge to create the K&N cold air intake too. Now you can get a K&N cold air intake that brings advanced airflow management to the entire intake tract of your vehicle. But there's more: K&N took their air filter advancements and applied them to your engine oil as well, resulting in K&N oil filters. K&N oil filters provide better filtration down to the smallest microscopic particles while still retaining full flow characteristics to prevent oil starvation. So now you can apply K&N technology to all aspects of your engine and reap the benefits of high-tech filtration.