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The Bard 5070-054BX is an OEM drive belt specified at 48.875 inches long, used on select Bard wall-mounted air conditioner and heat pump models to transfer power from the motor to the driven fan or blower components. A worn or stretched belt can lead to reduced airflow, noise, slippage, and overheating, so replacing it with the correct Bard part number helps restore proper fan speed and stable system operation. Match the belt by part number and length, and confirm the routing and tensioning procedure in your unit’s Bard service literature before startup.
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.