The Bosch 11011646 Dishwasher Upper Spray Arm distributes water throughout the upper rack to support proper cleaning of dishes, glasses, and other kitchen items. This component rotates during the wash cycle as pressurized water flows through its spray openings, directing water across the load to help remove food particles and residue. Positioned beneath the upper rack, the spray arm supports water circulation and assists with consistent cleaning coverage. Replacing a damaged or blocked spray arm can restore proper water distribution and improve wash results. The assembly is designed for compatible dishwasher models and should be checked against the appliance model before installation to ensure proper fit and operation.