Dishwasher door gasket (or door seal). This door gasket creates a seal around the dishwasher to prevent water from leaking out. If the gasket is torn, the dishwasher will leak water.
Bottom tank gasket
Dishwasher lower spray arm. The lower spray arm circulates water to the dishes in the lower rack. The spray arm can get clogged with food particles over time. If the spray arm is clogged, the dishes in the lower dishrack may not come out clean.
Dishwasher drain pump. The drain pump forces water through the drain hose. If the drain pump is clogged, damaged, or defective, the dishwasher will not drain properly.
Water inlet valve
Center wash arm with water supply tube
Detergent/rinse aid dispenser