Compatible Upper Spray Arm Assembly for Frigidaire PLD2850RDC2, Frigidaire PLD2855RFC0, Frigidaire FDBB4365FS3, Frigidaire LEDB500FEE0 Dishwasher

The threads on the part which connects to the upper spray water supply are not correct for my dishwasher. The old part had 4 threads, whereas the new part has 5 threads. I ended up using the old part, but was able to use the new spray arm connected to the old part.