Genuine OEM Volkswagen Washer Reservoir Tank Filler Neck, part number 7E0955463B. This neck allows fluid to be added to the washer reservoir, channeling it efficiently and preventing spills during refills. It is an essential part of the vehicle's windshield washing system. Constructed from durable plastic, this filler neck is approximately 71cm long. Choosing a genuine OEM filler neck ensures correct routing geometry, secure connections, and resistance to washer fluid chemicals, preventing leaks and maintaining system integrity.