K&N

K&N Engineering, of Riverside, California, is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. From humble beginnings as a family run business over 35 years ago, K&N Engineering, now a truly global company with offices in the U.K. and the Netherlands, continues to exist as a family owned business with an enthusiast mindset and a direct connection with motor sports that carries over throughout all levels of management and manufacturing. Today, K&N exists as both the sales and brand leader for performance filters, and maintains a stocking catalogue of over 3,500 part numbers, including an extensive line of both factory replacement drop-in filters, FIPK (Fuel Injection Performance Kit) applications, and its line of innovative Performance Gold oil filters.

• Overall Rating: 5 out of 5
  K&N Filters are the Best, December 09, 2007
  By Santa O  from Plymouth, MA
  "Just be sure to put it in right. Clean out area is needed. It works great and got 2 MPG better in my A4 Audi and seemed to be a little quicker."