Cobb Tuning Big SF Cold Air Intake System w/Airbox - Subaru WRX VA 15-21The Big SF Intake for the 2015+ Subaru WRX is constructed of full 3" aluminum tubing, a custom aluminum airbox, and a dual cone intake filter. Mandrel bent and powder coated black, the 3" intake tube and custom airbox look great in the engine bay and increase airflow potential substantially. The reusable Green filter can be cleaned and re used for the life of your vehicle! Note: Proper tuning is MANDATORY for this intake!! Use associated +BigSF OTS