Genuine OEM Volkswagen Expansion Hose, part number 7P0422893AD. This hose connects the power steering vane pump to the steering gear, allowing fluid to flow for assisted steering. It is located in the power steering assembly. The hose has a length of 0.87 meters. Genuine OEM hoses are manufactured to precise specifications to ensure proper fluid flow and prevent leaks, maintaining the integrity of the power steering system.