Genuine OEM Volkswagen Heater Coolant Hose, part number 7P0815984. This hose is responsible for circulating coolant to the vehicle's heating system, enabling the cabin to be warmed. It is positioned within the heater core circuit. Weighing 0.0574 kg and measuring 0.18m in length, this hose is designed to withstand the temperatures and pressures of the cooling system. Using a genuine OEM heater hose ensures proper routing, material durability, and resistance to leaks, which are vital for efficient heating and preventing coolant loss.