The Lower Spray Arm is an OEM replacement part for Frigidaire dishwashers. It rotates within the lower dishrack, spraying water during cycles to thoroughly clean dishes. Approximate Dimensions: 16.00 x 3.10 x 3.10 Inches (L x W x H) Causes of a bad lower spray arm include normal wear and tear over extended use. Clogs within the arm can also reduce water pressure. Symptoms of issues with the lower spray arm are:  Inadequate cleaning performance, especially on lower rack dishes Reduced or uneven water coverage  Difficulty rotating or getting stuck This OEM replacement part is compatible with Electrolux, Gibson, and Kenmore brand dishwashers too.Part Number 5304517203 (AP6783883) replaces 154568001, 5304506526, 154568002, 1542508, 154250801, 154250901, 154281101, 1543358, 154414101, 154414102, 4840174, PS12585623.