This OEM Mercedes W221 S550 CL550 E550 Engine Motor Vacuum System Air Line is a genuine part made in Germany by Mercedes-Benz. It is a direct replacement for your vehicle and comes with a 90-day manufacturer warranty. The product is designed for models from 2011 to 2017, including the E-Class, S-Class, CL-Class, SL-Class, and GL-Class. The air line canister is suitable for both left and right sides and is interchangeable with part numbers 2780980889 / A2780980889. It is a high-quality component that will ensure proper function of your engine's vacuum system.