The filler neck for the windscreen washer tank is located in the cabin of the Volkswagen Bay Window Bus. To hide it, Volkswagen mounted a cover over it.
Volkswagen used the same trick on the VW Vanagon, on models that are equipped with a wiper/washer system on the rear window, where the tank is located at the back.
This cover is identical to the original and ensures that the filler neck is hidden.
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