HomeHVAC > A/C Flow RestrictorsFour Seasons 39665 A/C Expansion Valve - Rear
Part #: 39665

Four Seasons 39665 A/C Expansion Valve - Rear

Expansion Valve, Rear
11 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Expansion Valve, Rear
Fitment: Land Rover, Range Rover Sport, Discovery, and Discovery Sport
Easy Returns — Return within 60 days for a full refund
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Reliable A/C Expansion Valve for Land Rover Vehicles

The Four Seasons Expansion Valve 39665 is engineered to regulate refrigerant flow in your Land Rover Discovery, Discovery Sport, and Range Rover Sport. Designed with durable aluminum and compatible with R134a refrigerant, this block-type valve ensures efficient air conditioning system performance.

  • Constructed from lightweight 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 O-ring seals
  • Meets or exceeds OEM specifications for reliable fit and function
  • Includes solenoid style for precise refrigerant control
  • Designed for 1.5 tonnage A/C systems

About the Four Seasons Expansion Valve Product Line

The Four Seasons Expansion Valve product line focuses on delivering precise refrigerant flow control components for automotive HVAC systems. The Expansion Valve 39665 is part of this line, offering a block-type valve with integrated solenoid functionality. This design supports consistent superheat control and system efficiency, making it suitable for specific Land Rover models requiring OEM-level performance.

Detailed Product Description

This A/C expansion valve is crafted from aluminum, providing corrosion resistance and long service life. It is designed for use with R134a refrigerant and features female suction and liquid inlet/outlet fittings with O-ring seals to prevent leaks. The valve includes two mounting holes for secure attachment and uses No. 12 thread diameters on suction fittings and No. 8 and No. 10 on liquid fittings. The block-type valve style with solenoid enhances refrigerant metering accuracy, supporting a superheat value of 10.000. This part meets or exceeds OEM standards, ensuring compatibility and reliable operation in Land Rover Discovery, Discovery Sport, and Range Rover Sport models.

Common Applications and Issues Addressed

  • Regulates refrigerant flow to maintain optimal A/C system pressure
  • Prevents compressor damage caused by improper refrigerant metering
  • Resolves inconsistent cabin cooling or fluctuating air temperatures
  • Eliminates refrigerant leaks due to worn or damaged expansion valves
  • Supports efficient operation of 1.5 tonnage A/C systems in Land Rover vehicles

Installation Notes and Tips

  • Ensure system is evacuated and depressurized before removal
  • Verify compatibility with Land Rover Discovery, Discovery Sport, or Range Rover Sport models
  • Inspect O-rings and replace if necessary to prevent leaks
  • Use proper torque specifications on mounting bolts to avoid damage
  • Test A/C system performance after installation to confirm proper function

Quality Assurance and Warranty

The Four Seasons Expansion Valve 39665 is manufactured to meet or exceed OEM quality standards. It undergoes rigorous testing to ensure durability and reliable performance in automotive HVAC systems. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in material and workmanship.

BrandFour Seasons
Part Number39665
PositionExpansion Valve, Rear
DescriptionExpansion Valves
Liquid Inlet Fitting GenderFemale
Liquid Inlet Fitting Thread DiameterNo. 8
Liquid Inlet StyleO-Ring
Liquid Outlet Fitting GenderFemale
Liquid Outlet Fitting Thread DiameterNo. 10
Liquid Outlet StyleO-Ring
MaterialAluminum
Meets / Exceeds OEM?Yes
Mounting Hole Quantity2
Refrigerant TypeR134A
Stylew/ Solenoid
Suction Inlet Fitting GenderFemale
Suction Inlet Fitting Thread DiameterNo. 12
Suction Inlet StyleO-Ring
Suction Outlet Fitting GenderFemale
Suction Outlet Fitting Thread DiameterNo. 12
Suction Outlet StyleO-Ring
Super Heat10.000
Switch Included?Not Included
Tonnage1.5
TypeBlock Type

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2024Land RoverDiscovery2.0LL4RearSolihull Plant Built; Expansion Valve
2023Land RoverDiscovery2.0LL4RearSolihull Plant Built; Expansion Valve
2022Land RoverDiscovery2.0LL4RearSolihull Plant Built; Expansion Valve
2021Land RoverRange Rover SportRearExpansion Valve
2020Land RoverDiscoveryRearExpansion Valve
2020Land RoverDiscovery SportRearExpansion Valve
2020Land RoverRange Rover SportRearExpansion Valve
2019Land RoverDiscoveryRearExpansion Valve
2019Land RoverDiscovery SportRearExpansion Valve
2019Land RoverRange Rover SportRearExpansion Valve
2018Land RoverRange Rover SportRearExpansion 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:

39665759886A99549LR072510LRLR072510

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