The Mishimoto 15-20 BMW F8X M3/M4 Baffled Oil Catch Can - Mineral Gray is a performance upgrade for BMW vehicles. This oil catch can is designed to reduce carbon buildup, oil sludge, and engine deposits that can compromise engine performance. The catch can is constructed from lightweight CNC-machined aluminum and features a durable mineral gray finish. An internal air diverter turbulates air longer to improve oil separation, and the two-port design allows for maximum airflow. The kit includes all necessary hardware for a hassle-free installation.