MODEL NUMBER: WD22X27724 (AP7014276) replaces WD22X26621, WD22X10091 ,Replacement Arm. Used with GE, Haier, Hotpoint, RCA, and some Kenmore model dishwashers. The spray arm plays an essential role in cleaning by spraying water directly onto dishes to wash away soap scum and food particles. It works with the lower spray arm and rinse arms to achieve maximum coverage and cleaning power throughout the wash cycle. Causes of a bad middle spray arm can include buildup of minerals or debris that clogs the spray holes or damage to the arm itself such as bending or breakage.