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Bard 917-0257BX is a boxed service coil assembly used in Bard wall-mount HVAC equipment to restore proper heat transfer and refrigerant performance when a coil is damaged, leaking, or restricted. As an OEM Bard replacement, this coil assembly is built to the factory fit and connection requirements so it installs cleanly in the intended cabinet and helps the system return to correct cooling operation with stable temperatures and airflow. Before ordering, match the part number and verify the unit model and serial information to confirm compatibility, since coil assemblies can vary by capacity and design across Bard families and revisions.
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.