Product review (3 stars): Not exact fit, but fills the gap
The upper rack of my dishwasher needed some new wheels & axles, but I was not able to find an exact match.  I took a chance on part # 903093, and so far it's doing the job.  Not perfect, but if my upper rack isn't falling, then I don't need to spend $150 for a new rack assembly or $400+ for a new dishwasher, so it's still a win.