The Genuine Mercedes Sunroof Deflector Hinge is a high-quality component designed specifically for Mercedes vehicles. It is used to secure the sunroof deflector, which helps to reduce wind noise and deflects debris while driving with the sunroof open. This hinge is made from durable materials and is built to withstand the rigors of daily use. It is an essential part of the sunroof system and ensures proper functioning and longevity of the deflector. This product is a genuine Mercedes part and is compatible with various models, including the 2137821000.