Fuel filter numbers

[Diesel X]

Running a airdog on the 6.0 Filter FF 100-2 and WS 100. Looking for the Cat filter numbers for these two. Also where is the cheapest they can be found. I know there is gold in the yellow paint

 

[79jasper]

I don't think I found a cat filter, (no reason for it) but I saved the filter numbers to cross reference.
33420
533790

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[Diesel X]

Thanks