Genuine OEM Volkswagen Window Washer Lower Tank Reservoir, part number 3C8955453F. This reservoir is a critical component of the windshield washer system, designed to store the washer fluid for dispensing onto the windshield. It functions as the lower tank within the overall washer fluid storage assembly. Constructed from durable white plastic, it weighs approximately 0.386 kg and measures 0.26m x 0.24m x 0.165m. Opting for a genuine OEM reservoir ensures correct capacity, proper mounting points, and leak-free operation, maintaining the integrity of the washer system.