Genuine OEM VAG coolant hose with solenoid valve, part number 3WA820113C. This integrated assembly is part of the engine cooling system, featuring a hose for coolant transport and a solenoid valve to regulate flow. The precise control provided by the valve is crucial for maintaining optimal engine operating temperature under various conditions. Genuine OEM components ensure the correct material composition, valve calibration, and hose dimensions for reliable performance and longevity.