The Whirlpool W10837026 Pump and Motor Assembly circulates water through the dishwasher for effective cleaning during wash cycles. This replacement assembly combines a motor and pump that work together to move water from the dishwasher tub through the spray arms. The motor powers the pump, creating the water flow and pressure needed to distribute water across dishes and cookware. Proper circulation supports consistent spray coverage and allows detergent and water to reach the items being cleaned.