The Genuine BMW A/C Refrigerant Hose (part number 64509181832) is a high-quality replacement part for BMW vehicles. This hose is designed specifically for the air conditioning system and is responsible for carrying the refrigerant from the compressor to the condenser. It is made from durable materials and is built to withstand high temperatures and pressure. This A/C refrigerant hose is an essential component for maintaining a properly functioning air conditioning system in your BMW.