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Bard 171-301BX is an OEM heat exchanger assembly rated for 125,000 BTU that is used in Bard wall mounted gas/electric equipment to transfer heat safely and efficiently from the burner section into the supply air stream. If you are troubleshooting a cracked, leaking, or restricted heat exchanger, replacing it with the correct factory assembly helps restore proper combustion airflow, stable heating operation, and reliable limit control performance. Because heat exchangers are model and serial specific, match this part number to the unit parts list before ordering to ensure proper fit and safe operation.
* Orders less than $50 may incure a minimum order fee.
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.