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The Bard 5151-045BX fan blade is a 20 inch, 4 blade, clockwise rotation condenser fan blade designed to restore proper airflow across the outdoor coil on compatible Bard wall mounted HVAC equipment. Replacing a bent, cracked, or mismatched blade helps maintain correct head pressure, supports stable cooling performance, and reduces strain on the fan motor. As a genuine Bard OEM replacement, 5151-045BX is built to match the original fit and rotation requirements, so you can service the unit with confidence after confirming diameter, hub/bore, and rotation direction against your Bard model and parts list.
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.