Heavy Duty Blower Motor LATE serial numberOEM part numbers 8721573, 700710548, 7025851 Item Information Replaces Bushing Style Motor with New HD Bearing Style Motor With 48" Wire Leads Wire Identification: Orange = High Speed, Yellow = Medium Speed, Red = Low Speed, Black = Ground Additional Information Serial Number CFH0028001 thru CFH0028509, Serial Number CFH0028510 and Above Specifications TYPE Double Shaft, 3 Speed SHAFT SIZE 3 8" SHAFT LENGTH 4 1 4" MOTOR DIAMETER 3 1 2" MOTOR LENGTH 4