Genuine OEM Volkswagen hose clamp, part number N91184901. This component is designed to securely fasten coolant hoses to their respective fittings, ensuring a tight, leak-proof seal within the engine cooling system. It is used throughout the cooling circuit as shown in the assembly diagram. The clamp is manufactured to precise dimensions to provide consistent radial pressure on the hose connection. Genuine OEM clamps are critical for maintaining the integrity of the cooling system, preventing coolant leaks, and ensuring proper hose routing geometry under thermal stress.