Genuine OEM Volkswagen Rear Shock Absorber Stop Buffer, part number 1EA511357D. This essential component is designed to prevent the rear shock absorber from over-compressing, protecting the suspension system from damage during extreme impacts or heavy loads. It is positioned on the rear shock absorber shaft. Weighing 0.146 kg, this buffer is typically made from durable, high-density rubber or polyurethane. Using a genuine OEM stop buffer ensures proper suspension travel limits, maintains ride comfort, and extends the lifespan of shock absorbers and other suspension components.