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The Bard 5201-026BX filter drier is an OEM refrigerant-line component used on Bard wall-mounted air conditioners to help protect the sealed system by capturing moisture and contaminants that can lead to acid formation, corrosion, restrictions, and compressor damage. It is typically installed in the liquid line and is commonly replaced any time the refrigerant circuit is opened for a repair or major component change, helping ensure clean, dry refrigerant reaches the metering device and evaporator. Because correct fit and capacity matter, match 5201-026BX to your unit model and service literature before ordering, and follow standard brazing, evacuation, and charging practices during installation.
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.