The Dynamic Air Scoop (D.A.S.) from aFe is a very simple snap - in product that increases airflow and velocity into the Momentum HD air intake system from the front of the vehicle. This scoop is constructed of high quality plastic for greater strength and unique styling. This scoop is a perfect upgrade to the Momentum HD cold air intake system (PN 5051 - 73004). Lower Intake Air Temperature Dynamic Air scoops lower intake air temperatures by forcing more cool air from the front of the vehicle into the air intake auxiliary scoop. High Quality D.A.S Scoop This Dynamic Air Scoop is constructed with high quality plastic for greater strength and unique styling.