Genuine OEM Volkswagen Rear Differential Breather Plug, part number 7E0525695A. This essential component allows the differential to equalize internal pressure while preventing the ingress of water and contaminants. It is located on the rear differential housing. Weighing 0.044 kg, this small but critical part ensures proper differential function and longevity. Genuine OEM plugs guarantee precise threading and sealing, preventing leaks and maintaining optimal differential ventilation.