This OEM Replacement Part is a designed nut to secure the Frigidaire dishwasher's spray arm. With dimensions of 2.0" x 2.0" x 0.6", this nut ensures a snug fit between the lower spray arm and the filter. It helps maintain the stability of the spray arm and enhances the overall performance of the dishwasher. The nut plays a role in preventing leakages at the bottom of the spray arm. If such a leak occurs, it may be indicative of a faulty nut. A timely replacement of this nut can ensure the proper functioning of the dishwasher. This part is compatible with select Frigidaire brand models including Crosley, Kenmore, Tappan, White Westinghouse.Part Number 154335201 (AP2109387) replaces 419507, AH420799, EA420799, PS420799.