Upper spray arm

Dishwasher Repair
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1

Frigidare dishwasher model # FDBB4365FSO
Upper spray arm fell off. How do You fix it? Is the part number: 154478201?

2

Most likely it clamps on the water delivery tube.

The part number you mentioned is for the white spray arm. According to the model number you posted it suppose to be gray and the part number for the gray arm is AP4343578

Here are the break down diagrams for the Frigidaire dishwasher Model FDBB4365FS0

Gene.