Product review (4 stars): The Right Part with an Updated Shape
At first I wondered if this was the right part, as the wash arm it was to replace was somewhat different in shape, although the dishwasher model numbers listed for this part matched that of our machine.

There are metal clips near each end of the wash arm's underside that, with the OEM wash arm, rubbed against the heating element in the bottom of the machine, preventing the arm from making complete revolutions as it sprayed. I suspect that this is what caused the previous wash arm to melt badly on the underside, as it was obvious upon inspection that high heat had been conducted to the plastic by the metal clips, virtually destroying the plastic underside of the wash arm near and around the clips. So, before installing the new wash arm, I applied some thumb pressure to the strips where they naturally curve a bit and enhanced the arc of those curved areas until they cleared the heating elements and allowed the wash arm to rotate freely through 360 degrees with no drag. That appears to have solved the wash arm issues. I also removed, cleaned, and reinstalled the screen and debris trap, which solved the issue of the machine's failure to properly clean a normal load of pre-rinsed dishes. All is well once again with our Frigidaire dishwasher. I would have given this part 5 stars were it not for the issue with the metal clips. Otherwise, it works fine.