HomeHVAC > A/C Flow RestrictorsFour Seasons 39543 A/C Expansion Valve
Part #: 39543

Four Seasons 39543 A/C Expansion Valve

Expansion Valve
9 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Expansion Valve
Fitment: Chevrolet, Impala and Impala Limited
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Reliable A/C Expansion Valve for Chevrolet Impala Models

The Four Seasons Expansion Valve 39543 is engineered to regulate refrigerant flow in the air conditioning system of Chevrolet Impala and Impala Limited vehicles. Designed with durable aluminum construction, this block-type valve ensures consistent performance with R134a refrigerant compatibility.

Key Features of Four Seasons Expansion Valve 39543

  • Constructed from corrosion-resistant aluminum for durability
  • Compatible with R134a refrigerant systems
  • Block type design with two mounting holes for secure installation
  • Female suction and liquid inlet/outlet fittings with sealing washer style
  • Meets or exceeds OEM specifications for Chevrolet Impala and Impala Limited
  • Designed without solenoid for straightforward operation

Detailed Product Description

This Four Seasons Expansion Valve from the Expansion Valve product line is specifically designed to control the flow of refrigerant in the A/C system of Chevrolet Impala and Impala Limited models. The valve features female suction inlet and outlet fittings with No. 10 thread diameter, and female liquid inlet and outlet fittings with No. 6 and No. 8 thread diameters respectively, all utilizing sealing washer styles to ensure leak-free connections. The block-type aluminum construction provides reliable heat transfer and corrosion resistance, essential for maintaining optimal air conditioning performance. The valve is compatible with R134a refrigerant, the standard for many modern vehicles, and is designed without a solenoid, simplifying the system's mechanical operation.

Common Applications and Issues Addressed

  • Regulates refrigerant flow to maintain proper cooling efficiency
  • Prevents compressor damage caused by improper refrigerant pressure
  • Eliminates inconsistent cabin temperatures due to faulty expansion valves
  • Resolves A/C system leaks related to worn or damaged valve fittings
  • Restores proper air conditioning function in Chevrolet Impala and Impala Limited vehicles

Installation Notes and Tips

  • Ensure compatibility with Chevrolet Impala or Impala Limited before installation
  • Use proper sealing washers on liquid inlet and outlet fittings to prevent leaks
  • Verify that the refrigerant type is R134a for system compatibility
  • Check mounting holes and secure valve firmly using the two provided points
  • Consult vehicle service manual for specific installation procedures and torque specifications

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39543 meets or exceeds OEM standards, ensuring reliable performance and durability. Manufactured with precision aluminum components and designed for direct fitment on Chevrolet Impala and Impala Limited models, this valve supports long-term A/C system functionality. Warranty details should be confirmed with the product documentation or manufacturer.

BrandFour Seasons
Part Number39543
PositionExpansion Valve
ColorAluminum
DescriptionExpansion Valves
Liquid Inlet Fitting GenderFemale
Liquid Inlet Fitting Thread DiameterNo. 6
Liquid Inlet Size IN0.34
Liquid Inlet Size MM8.6
Liquid Inlet StyleSealing Washer
Liquid Inlet Thread TypeNot Threaded
Liquid Inlet TypeSealing Washer
Liquid Outlet Fitting GenderFemale
Liquid Outlet Fitting Thread DiameterNo. 8
Liquid Outlet StyleSealing Washer
Liquid Outlet Thread TypeNot Threaded
Liquid Outlet TypeSealing Washer
Lqd Out Size IN0.46
Lqd Out Size MM11.8
MaterialAluminum
Meets / Exceeds OEM?Yes
Mounting Hole Quantity2
Refrigerant TypeR134A
Stylew/o Solenoid
Suc In Size IN0.63
Suc In Size MM16
Suc Out Size IN0.700
Suc Out Size MM17.7
Suction Inlet Fitting GenderFemale
Suction Inlet Fitting Thread DiameterNo. 10
Suction Inlet StyleSealing Washer
Suction Inlet Thread TypeNot Threaded
Suction Inlet TypeSealing Washer
Suction Outlet Fitting GenderFemale
Suction Outlet Fitting Thread DiameterNo. 10
Suction Outlet StyleSealing Washer
Suction Outlet Thread TypeNot Threaded
Suction Outlet TypeSealing Washer
Super Heat-4.0
Switch Included?Not Included
Tonnage1
TypeBlock Type

This part fits 9 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2020ChevroletImpalaN/Aw/ R134a; Expansion Valve
2019ChevroletImpala3.6LV6N/Aw/ R134a; Expansion Valve
2018ChevroletImpalaN/AExpansion Valve
2017ChevroletImpala2.5LL4GASN/AExpansion Valve
2017ChevroletImpala2.5LL4FLEXN/AExpansion Valve
2017ChevroletImpala3.6LV6FLEXN/AExpansion Valve
2017ChevroletImpala3.6LV6BI-FUELN/AExpansion Valve
2016ChevroletImpalaN/AExpansion Valve
2016ChevroletImpala LimitedN/AExpansion Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

217543229809462311466423473612313135139543759753A17543EX529495CT39543

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.