Genuine OEM Lexus A/C Evaporator Drain Hose, part number 8853948090. This hose is responsible for draining condensation that accumulates on the A/C evaporator core, preventing water buildup inside the vehicle. It connects to the bottom of the evaporator housing. Genuine OEM hoses are designed with the correct material resistance to refrigerant and temperature fluctuations, ensuring a long service life.