The Genuine BMW Heater Hose - 64218390355 is a high-quality, OEM replacement part for BMW vehicles. It is designed to connect the engine's cooling system to the heater core, allowing hot coolant to flow through and provide heat to the interior of the vehicle. This hose is made from durable materials and is specifically engineered to fit and function like the original factory part. It is an essential component for maintaining proper heating and cooling performance in your BMW.