What is the importance of an air filter in your Infiniti FX35? Think of the human body system. If you allow all the harmful substances such as carbon deposits and dust to enter your body, eventually you will get sick. If the engine of your car is besiege with contaminants, it cannot generate the same amount of power that you have come to expect in an Infiniti. In order to achieve superior engine filtration, use a K&N Air Filter. K&N has been in the filtration business for over 30 years now. The Infiniti Air Filter by K&N K333320312 allows unrestricted air flow inside you engine compartment. It results in a cleaner fuel mixture that allows more power output from the engine without any increase in fuel consumption. The 2004-2006 Infiniti K&N Air Filter boast of four-six layers of cotton gauze that are coated with oil and sandwiched between two pieces of wire mesh made from aluminum. It traps more dirt and harmful elements that are detrimental to the life of your car’s engine. Can you think of any other filter that gives you 50,000 miles of clean air? That’s right, only K&N has the ability to do this! You can wash and reuse them, the reason why it reaches such incredible landmark. This OEM replacement product is available on our product catalogue. Please visit our user-friendly and secure web site to find other parts or accessories that you need for your car. For questions and orders please call our toll-free customer service hotline.