The Whirlpool W10803178 Lower Spray Arm distributes pressurized water across the lower section of the dishwasher for consistent cleaning coverage. This replacement spray arm connects to the dishwasher’s water circulation system and rotates as water flows through its spray openings during the wash cycle. The rotating action directs water upward and around the lower rack, allowing water... https://www.partsmelange.ca/whirlpool-w10803178-lower-spray-arm-for-dishwasher