What timer part numbers are interchangable with this model. MFG part number for this model is 154465901. Is MFG part number 154408901 interchangable?
Here are your parts
Parts for Frigidaire FDB510LCS3 Dishwasher - AppliancePartsPros.com
Not sure why you are looking for an alternate times as it looks like a direct replacement is available.
AP3220131
Click on the picture for more info on this part.
154465901. Is MFG part number 154408901 interchangable?
No. It is not listed as an alternate timer.