The Genuine Mercedes Crankcase Breather Assembly - 274090560080 is a component of the engine system in Mercedes vehicles. It is responsible for releasing excess pressure and gases from the crankcase, preventing damage to the engine. This assembly is designed to fit and function seamlessly with Mercedes engines, providing reliable and efficient operation. It is made from high-quality materials and meets the strict standards of Mercedes, ensuring durability and longevity. This crankcase breather assembly is an essential part of the engine system and is crucial for maintaining the performance and longevity of the vehicle.