Genuine OEM Audi Heater Coolant Hose, part number 4M2819350. This critical hose assembly is responsible for transporting hot coolant to the vehicle's heater core, enabling the cabin heating system. It is specifically designed for Right-Hand Drive (RHD) vehicle configurations, ensuring correct routing and connections. Constructed from durable, heat-resistant rubber and plastic, this assembly measures approximately 0.81m in length and weighs 0.86 kg. Using a genuine OEM coolant hose guarantees precise fitment, correct fluid resistance, and long-term reliability, preventing leaks and maintaining heating system integrity.