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The Bard 5051-203BX condenser coil (boxed service) is an OEM replacement heat exchanger used in the outdoor condenser section of select Bard wall mount packaged air conditioners, helping the system reject heat properly so head pressure, capacity, and efficiency stay where they should. This coil is a common service repair when a unit has a leak, corrosion damage, or restricted airflow from bent fins, and replacing it with the correct Bard coil helps maintain factory fit and refrigerant circuit compatibility. Based on published part cross references, 5051-203BX is used with Bard W30AB series models including W30ABDA, W30ABDB, W30ABDC, and W30AB-A/B/C/D/F, so match your unit model and serial information before ordering to ensure proper application.
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.