Genuine 5N0122447AB Coolant Overflow Hose OEM Volkswagen Audi

The Genuine 5N0 122 447 AB is an OEM coolant overflow hose designed to exact factory specifications for Volkswagen and Audi vehicles. This hose connects the cooling system's expansion tank or radiator to the overflow reservoir, allowing coolant to safely vent and return as the engine heats and cools during normal operation.

As a genuine OEM replacement part, this hose is manufactured from the same high-quality materials and to the same tolerances as the original component installed at the factory. Choosing a genuine part ensures a precise fit, proper sealing, and long-term durability—eliminating the risk of premature failure or coolant leaks that can result from aftermarket substitutes.

Key Features:

• OEM part number: 5N0 122 447 AB
• Direct factory-replacement coolant overflow hose
• Manufactured to original equipment specifications
• Ensures proper coolant overflow and return function
• Resistant to high temperatures and coolant chemicals
• Precise fit — no modifications required

Replacing a cracked, brittle, or leaking coolant overflow hose is essential to maintaining proper cooling system pressure and preventing engine overheating. This genuine OEM hose restores the cooling system to factory condition.