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Bard 5651-217BX - Thermal Expansion Valve

The Bard 5651-217BX is an OEM thermal expansion valve used in Bard wall-mounted air conditioner refrigeration circuits to meter refrigerant into the evaporator coil based on operating conditions. When a system shows poor cooling, unstable superheat, frosting at the coil, or symptoms consistent with a restricted or stuck metering device, replacing the valve with the correct Bard part helps restore proper refrigerant control and overall unit performance. This boxed expansion valve is commonly referenced for R-410A applications with 3/8 inch connections and is listed for use on select Bard models such as J17A2-A and J24A2 series units, so match your model and refrigerant before ordering.


  • Technical Specifications
  • Product number: 5651-217BX
  • Manufacturer description: Expansion Valve - Boxed
  • HTS Code: "8415.90.8085"

  • Previous Versions
  • 5651-217 (Obsolete, superseded by 5651-217BX)

$152.00

What does the "BX" suffix mean?

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.