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The Bard 171-305BX heat exchanger assembly is an OEM service replacement for Bard wall mount gas electric units using a 67.5K furnace section, restoring safe and efficient heat transfer between the burner compartment and the supply air stream. This assembly is built to Bard fit and performance requirements for correct alignment with the burner box and collector components, helping resolve issues like cracked heat exchanger symptoms, nuisance rollout or limit trips, and reduced heating output. Verify compatibility by matching your unit model and serial number to the parts list in the correct Bard service manual before ordering, since heat exchanger configurations can vary by model family and heat input size.
* 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.