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The Whirlpool WP3378144 Dishwasher Wash Arm Tube is an essential component that directs water to your washing's middle spray arm. The water supply is connected to this plastic tube, which is usually about 11 inches long. It pumps water up to the spray arm, which subsequently distributes cleaning water throughout the dishwasher. A broken or blocked wash arm tube might impede water flow and reduce your dishwasher's cleaning performance. You may get your dishwasher to clean your dishes again by replacing the wash arm tube, which is a somewhat easy fix. This item is compatible with the following Whirlpool WP3378144 Corporation dishwasher brands: Whirlpool, Maytag, KitchenAid, and Kenmore.