The Lower Spray Arm is an OEM part for GE dishwashers. It is located at the bottom of the dishwasher. The spray arm uses a series of small nozzles and openings to produce targeted sprays that assist in loosening and washing away food debris. Causes of a bad lower spray arm include clogs or mineral buildup inside the spray nozzles over time, or damage such as bending of the arm that affects water pressure and spray patterns. Symptoms of a bad Lower Spray Arm include: Ineffective cleaning and rinsing at the bottom rack of dishes Standing water or poor drainage from the dishwasher tub Visible defects like cracks or gaps in the spray arm material This genuine GE replacement part is also compatible with Hotpoint, RCA, and select Kenmore models.Part Number WD22X10047 (AP3875619) replaces WD22X10030, WD22X10044, 1168308, AH1020205, EA1020205, PS1020205.