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FOUR SEASONS 38901 Specifications
DescriptionExpansion Valves
Dimensions (IN) - Liquid Inlet Size0.57 IN
Dimensions (IN) - Liquid Outlet Size0.69 IN
Dimensions (IN) - Suction Inlet Size0.69 IN
Dimensions (IN) - Suction Outlet Size0.81 IN
Dimensions (MM) - Liquid Inlet Size14.5 mm
Dimensions (MM) - Liquid Outlet Size17.6 mm
Dimensions (MM) - Suction Inlet Size17.6 mm
Dimensions (MM) - Suction Outlet Size20.7 mm
Liquid Inlet Fitting GenderFemale
Liquid Inlet Fitting Thread DiameterNo. 6
Liquid Inlet StyleFOR
Liquid Inlet Thread Type5/8" - 18
Liquid Inlet TypeO-Ring
Liquid Outlet Fitting GenderFemale
Liquid Outlet Fitting Thread DiameterNo. 8
Liquid Outlet StyleFOR
Liquid Outlet Thread Type3/4" - 18
Liquid Outlet TypeO-Ring
Meets / Exceeds OEM?Yes
Mounting Hole Quantity2
O-Ring A Number/Desc[24606] / Green O-Ring
O-Ring A Quantity1
O-Ring B Number/Desc[24608] / Green O-Ring
O-Ring B Quantity2
O-Ring C Number/Desc[24610] / Green O-Ring
O-Ring C Quantity1
Refrigerant TypeR134a
Stylew/o Solenoid
Suction Inlet Fitting GenderFemale
Suction Inlet Fitting Thread DiameterNo. 8
Suction Inlet StyleFOR
Suction Inlet Thread Type3/4" - 18
Suction Inlet TypeO-Ring
Suction Outlet Fitting GenderFemale
Suction Outlet Fitting Thread DiameterNo. 10
Suction Outlet StyleFOR
Suction Outlet Thread Type7/8" - 18
Suction Outlet TypeO-Ring
Super Heat8.000
Switch Included?Not Included
TypeBlock Type

Four Seasons' expansion devices are specifically calibrated to provide proper flow to the evaporator as well as restricting or modulating high pressure liquid causing a pressure drop to lower the refrigerant temperature. They also provide optimum cabin comfort for both the driver and passengers.

Features & Benefits
  • Block Valves are aluminum construction; all internal parts are designed to OE specifications
  • Internally and Externally Equalized Valves are copper and brass construction
  • Tubes to Cap connections are double soldered to insure integrity
  • Coverage includes both forward and reverse flow designs
  • Tonnage and Superheat is matched to OE specifications
  • Power valve is seasoned for 30 days, assembled and 100% function tested prior to shipping

Why Replace?

Expansion Valves regulate refrigerant flow within the system. Other than the Compressor, this is the only other moving part in the system.

  • Expansion Valves can become contaminated with system debris
  • Expansion Valves cannot be flushed and should be replaced whenever the Compressor is replaced
Additional Resources

Why Clean or Change the Expansion Valve?
OEM / Interchange Numbers: 19189840, 2027579, 308011, 4205085, 4379RD593270, 4379RD593270P, 4443017, 7701025083, 7701026533, 89051479, 8956000212, 8983501907, A2218591000, C8OZ19849A, E1HZ19849A, S10329015, SE2087249, SE2087282, YG236

Warranty Information:
120 Days