The Dynamic Air Scoop (D.A.S.) from aFe is a very simple bolt-on product that increases airflow and velocity into the Momentum HD air intake system through front grille area. This scoop is constructed of high quality cross-linked polyethylene plastic and made from heat soak resistant material for greater strength and unique styling. This scoop is a perfect upgrade to the Momentum HD cold air intake system P/N: 51/54-72006. Lower Intake Air Temperature: Dynamic Air scoops lower intake air temperatures by forcing more cool air from the front grille area into the air intake auxiliary scoop. High Quality D.A.S Scoop: This Dynamic Air Scoop is constructed with roto-molded plastic and made from heat soak resistant material for greater strength and unique styling. Hassle Free Installation: All necessary hardware is included for an easy, hassle free installation. Note: Requires minor modification to OE plastic trim.