Evap Fan Motor Replacement Components (501F, 601F,
          601F-2)
  501F    Use Starting w/Serial #M/P1004775 &
          Between #M960170-M960319 & Between
          #M996400-M996574. Prior to #M/P1004775
          Except Beween #M960170-M960319 & Except
          between #M996400-M996570 see 4200720.
  601F    Use Regardless of Serial Number.
  601F-2  Use Regardless of Serial Number.