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The Bard 800-0204BX Cooling Cap Tube Assembly (boxed) is an OEM refrigerant metering component used in Bard wall mounted air conditioners to regulate refrigerant flow during cooling operation, helping the system maintain proper pressures and stable coil performance. If your unit is experiencing poor cooling capacity, unstable superheat, or a restriction related to the fixed orifice metering circuit, replacing the capillary tube assembly with the correct Bard part helps restore factory operation and protects other sealed system components. Because cap tube sizing is application-specific, confirm your model and serial number range in the Bard parts list before ordering to ensure proper fit and cooling performance.
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.