One of the problems with the design of a 2005 – 2006 Nissan Frontier is the intake. The stock intake is a fairly tightly coiled design that is sandwiched into the engine compartment. It has tight turns and is restrictive. Worse, it can draw in warm air from within the engine compartment. Warm air is less dense than cold air, and so it contains a lesser concentration of oxygen, which reduces your power. With a Frontier K&N cold air intake, you can really make a difference in your Nissan’s performance. K&N is one of the most recognizable names in the auto industry for designing and developing cold air intakes. A K&N-equipped 2005 – 2006 Frontier can see some fairly significant performance upgrades. The Nissan Frontier cold air intake allows your engine to draw in cold air from outside of the engine compartment, and the intake channels the air through smoothly curved tubes rather than through tight factory pipes. The K&N Nissan cold air intake reduces the turbulence, which also contributes to the increased power that you will see by installing this kit. The cone filter than comes with all K&N cold air intake systems functions better than your factory air box at cleaning the air without disrupting or restricting your airflow. Gearhead enthusiasts understandably desire fantastic service when purchasing reliable automotive parts. Because you deserve that, we maintain a 24/7/365 support and help hotline to answer your requests. If you spot a lower price elsewhere, let us know - we will beat any price advertised elsewhere.