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The Bard 5151-033BX fan blade is a genuine OEM 18 inch, 3 blade condenser fan designed for counterclockwise rotation to pull air across the outdoor coil and keep head pressure and discharge temperatures in the proper range. If a Bard wall mount or packaged unit is vibrating, moving low airflow, or showing bent or cracked blades, replacing the fan blade with the correct OEM part helps restore smooth operation and reliable heat rejection without overloading the motor. This part is commonly listed as the direct replacement for Bard 5151-033, and correct fit depends on matching diameter, rotation, and hub bore to your existing blade and motor shaft before ordering.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.