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Bard part 8406-128BX is an OEM pressure transducer used on select Bard HVAC equipment to convert refrigerant or system pressure into a stable electrical signal the control board can read for safeties and operating logic. This sensor is commonly listed as a 0 to 300 PSI transducer assembly, making it a critical feedback component for proper unit protection and accurate control during operation. If your Bard unit is logging pressure related faults, short cycling, or running erratically, replacing the transducer with the correct factory part helps restore proper pressure monitoring and dependable performance. Confirm compatibility by matching the full part number 8406-128BX to your Bard model and serial information before ordering.
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.