The Upper Arm Spray Assembly is an OEM part for GE dishwashers. It is responsible for distributing water evenly throughout the dishwasher during the cleaning cycle, ensuring all dishes are thoroughly cleaned. The arm measures approximately 11 inches long. You should replace the upper arm spray assembly if it becomes clogged, damaged, or worn out. Causes of a bad spray assembly can include mineral buildup from hard water, food particles blocking the spray holes, or physical damage such as cracks or breaks. Symptoms of a bad upper arm spray assembly include: Poor cleaning performance, with dishes coming out dirty Uneven water distribution inside the dishwasher Visible cracks or blockages in the spray arm Unusual noises during the wash cycle This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.Part Number WD22X10084 (AP5657391) replaces WD22X10045, WD22X10069, 2688772, PS3511316, WD22X10027.