AIRAID has developed a state-of-the-art Cool Air Intake System for the new 05-09 Mustang, p/n 450-177 that generates an additional 13 rear-wheel horsepower and 10 lbs/ feet of torque. The new V6 Mustang system utilizes a roto-molded, cross-linked polyethylene intake tube and light-weight composite Cold Air Dam. The AIRAID MXP Series represents the ultimate in Cold Air Induction systems. Designed for high-performance gas and diesel applications, the MXP Intakes start with a new one piece roto-molded air box that addresses all the shortcomings of the restrictive factory design. Then AIRAID® adds a new air intake tube constructed of cross-linked, high-density Polyethylene that is designed using extensive computer modeling to maintain proper mass air flow readings and calibration. They also frequently have a built-in velocity stack, which further promotes airflow. What this all means is a simple-to-install system that was designed using extremely sophisticated technology to increase airflow while maintaining proper air / fuel ratios, therefore eliminating the need for re-calibration once installation is complete. Just bolt it on and go! Like any other AIRAID® Intake System, the MXP includes an AIRAID® Premium Filter that is sized to maximize power and efficiency.Click the E.O. number (D-609-5) to find out if your application is listed. If your application is not listed then your intake system is not legal for sale or use in California and some other states.Fits:FORD MUSTANG 2005-2009 V6 4.0L