Genuine OEM Volkswagen Rear Shock Absorber Stop Buffer, part number 5Q0511351E. This critical suspension component is designed to limit the upward travel of the shock absorber, preventing harsh bottoming out and protecting the suspension system from damage. It is installed on the rear axle, typically above or within the shock absorber assembly. Constructed from durable polyurethane or rubber, it provides progressive cushioning. Choosing a genuine OEM stop buffer ensures the correct material properties and dimensions for optimal suspension performance and longevity.