The Lower Spray Arm Base is an OEM part for GE dishwashers. Located inside the dishwasher tub, this part attaches securely to hold and rotate the lower spray arm during wash cycles. The spray arm works together with the rotating base to provide thorough lower rack coverage with water and dishwasher detergent. Symptoms of a bad lower spray arm base include: Inadequate cleaning of lower rack dishes Dirt or food particles left behind after cycles Loose or detached lower spray arm Causes of a bad lower spray arm base can be wear over many cycles of use. Damage may occur from impact with dishes or utensils loaded incorrectly. Regular mineral buildup on the connectors also reduces efficient spinning. This OEM GE part can also be used on Hotpoint, RCA, and Kenmore/Sears appliances.Part Number WD12X10244 (AP4300545) replaces 1263951, AH1765974, EA1765974, PS1765974.