The Mishimoto 15-20 BMW F8X M3/M4 Baffled Oil Catch Can is designed to separate oil particles from the PCV/CCV air that would otherwise be re-circulated back into the intake. This helps to reduce carbon buildup and oil sludge, which can rob your engine of performance and efficiency. This kit is constructed from lightweight, durable aluminum and features a unique Sakhir Orange finish. The kit includes all necessary hardware and hoses for a complete installation, and is backed by Mishimoto's Lifetime Warranty.