Nordyne 667359R Fan Blade

Nordyne 667359R 23" Diameter, 23 degree Pitch, 3 Blade, CW Rotation, 1/2" Bore, Fan Blade

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I need part number 667359 is part number 667359R the same thing and the R stands for replacement?

Yes, 667359 is the old number and 667359R is the new number. They are the same thing. Thank you.