New Original Part, Original Factory Replacement OEM Genuine Whirlpool 9742945 Dishwasher Wash Arm Nut We ship same or next business day! Fast shipping! Dishwasher spray nut (WP9742945) fastens the lower spray arm to the pump housing Part # WP9742945 (9742945) Replaces : 9742945, 8268873, WP8268873, AP6013836, PS11747063