Dishwasher upper wash arm (or spray arm). 9 inches, gray, plastic. The upper spray arm circulates water to the dishes in the upper rack. The spray arm can get clogged with food particles over time. If the spray arm is clogged, the dishes in the upper dishrack may not come out clean.
If your dishwasher has an unpleasant odor, we recommend cleaning it with Affresh dishwasher cleaner. This cleaner also improves dishwasher performance by removing soap buildup.