Genuine OEM Volkswagen Window Washer Reservoir Tank, part number 5K0955453B. This tank is a vital component of the windshield washer system, designed to safely store washer fluid for dispensing onto the windshield. It features an integrated filler neck and mounting points for secure installation within the engine bay or fender area. Constructed from durable, chemical-resistant plastic, the tank weighs approximately 0.578 kg. Using a genuine OEM reservoir tank ensures proper fitment, leak-free operation, and compatibility with the vehicle's washer pump and fluid level sensor.