The Injen Evolution Roto-Molded Cold Air Intake System is specifically engineered for the Honda Civic Si with the 1.5L Turbo engine, covering model years 2017 to 2021. This intake system features a durable roto-molded polyethylene construction, designed to provide a smooth and unrestricted path for airflow. Injen’s Evolution series intakes are known for their ability to deliver noticeable increases in horsepower and torque, along with an improved engine sound. The enclosed air box design helps to maintain cooler intake air temperatures for consistent performance.








