The 'REAR SUSPENSION ARM OUTER SEAL' for a Citroen HY is a vital component ensuring the sealing of the rear suspension arm's exterior. It prevents dirt, water, and other contaminants from entering the bearing, ensuring the suspension stays lubricated and functions smoothly. Suitable for maintenance and restoration of the classic Citroen HY. Choosing the correct seal is crucial to extend the vehicle’s lifespan and ensure optimal performance. Provides old-school precision and reliability on every drive.