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Bard part 8552-103BX is an OEM 50 MFD 440V run capacitor supplied boxed, used to help provide the correct phase shift and stable capacitance needed for reliable motor operation in Bard HVAC equipment. A weak or failed capacitor can cause hard starting, overheating, nuisance trips, or poor performance, so replacing it with the correct microfarad and voltage rating is critical for proper operation and long component life. As a genuine Bard replacement part, 8552-103BX is intended to match factory electrical specifications for proper fit and dependable service in compatible Bard wall-mounted and related unit assemblies; confirm the required rating and terminal style against your unit model and wiring diagram 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.