HomeHVAC > A/C Flow RestrictorsFour Seasons 39159 A/C Expansion Valve - Front or Rear
Part #: 39159

Four Seasons 39159 A/C Expansion Valve - Front or Rear

Expansion Valve, Front
22 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Expansion Valve, Front
Fitment: Land Rover, Discovery and Range Rover
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Reliable A/C Expansion Valve for Land Rover Discovery and Range Rover

The Four Seasons Expansion Valve 39159 is engineered to regulate refrigerant flow in your Land Rover Discovery or Range Rover's air conditioning system. Designed with durable aluminum and brass materials, this A/C expansion valve ensures consistent performance with R134a refrigerant.

  • Constructed from aluminum with brass components for durability
  • Compatible with R134a refrigerant systems
  • Thermostatic expansion valve (Txv) type for precise refrigerant control
  • Features two mounting holes for secure installation
  • Female fittings on suction inlet, suction outlet, liquid inlet, and liquid outlet

About the Four Seasons Expansion Valve Product Line

The Four Seasons Expansion Valve product line focuses on providing reliable A/C flow restrictors designed to maintain optimal refrigerant flow and system efficiency. The Expansion Valve 39159 is part of this line, offering a thermostatic expansion valve (Txv) type that is specifically engineered for select Land Rover models, ensuring compatibility and performance within the HVAC system.

Detailed Product Description

This A/C expansion valve (part number 39159) is designed to precisely regulate the flow of R134a refrigerant in the air conditioning systems of Land Rover Discovery and Range Rover vehicles. The valve’s aluminum body combined with brass fittings provides corrosion resistance and long-lasting durability. The thermostatic expansion valve (Txv) design allows for accurate control of refrigerant flow based on temperature changes, improving system efficiency and comfort. With two mounting holes and female fittings on all inlet and outlet connections, installation is straightforward and secure.

Common Issues Addressed by This Expansion Valve

  • Inconsistent cabin cooling due to improper refrigerant flow
  • Air conditioning system cycling on and off frequently
  • Reduced A/C performance caused by faulty or clogged expansion valves
  • Refrigerant leaks at connection points due to worn fittings
  • Overheating of the evaporator from incorrect refrigerant metering

Installation Notes and Tips

  • Ensure compatibility with Land Rover Discovery and Range Rover models before installation
  • Check that all female fittings align properly with existing system connections
  • Use proper torque specifications on the two mounting holes to avoid leaks
  • Flush the A/C system to remove contaminants before installing the new valve
  • Verify refrigerant type R134a is used in the system for optimal performance

Quality Assurance and Warranty

Four Seasons Expansion Valve 39159 is manufactured to meet OEM standards for fit and function. The use of aluminum and brass materials ensures corrosion resistance and durability under typical operating conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number39159
PositionExpansion Valve, Front
ColorBrass
Liquid Inlet Fitting GenderFemale
Liquid Outlet Fitting GenderFemale
MaterialAluminum
Mounting Hole Quantity2
Refrigerant TypeR134A
Suction Inlet Fitting GenderFemale
Suction Outlet Fitting GenderFemale
TypeTXV

This part fits 22 vehicles. Search below:

YearMakeModelPositionNotes
2004Land RoverDiscoveryFrontExpansion Valve
2004Land RoverDiscoveryRearExpansion Valve
2003Land RoverDiscoveryFrontExpansion Valve
2003Land RoverDiscoveryRearExpansion Valve
2002Land RoverDiscoveryFrontExpansion Valve
2002Land RoverDiscoveryRearExpansion Valve
2001Land RoverDiscoveryFrontExpansion Valve
2001Land RoverDiscoveryRearExpansion Valve
2000Land RoverDiscoveryFrontExpansion Valve
2000Land RoverDiscoveryRearExpansion Valve
1999Land RoverDiscoveryFrontExpansion Valve
1999Land RoverDiscoveryRearExpansion Valve
1998Land RoverDiscoveryFrontExpansion Valve
1998Land RoverDiscoveryRearExpansion Valve
1997Land RoverDiscoveryFrontExpansion Valve
1997Land RoverDiscoveryRearExpansion Valve
1994Land RoverRange RoverN/AExpansion Valve
1993Land RoverRange RoverN/AExpansion Valve
1992Land RoverRange RoverN/AExpansion Valve
1991Land RoverRange RoverN/AExpansion Valve
1990Land RoverRange RoverN/AExpansion Valve
1989Land RoverRange RoverN/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:

1113915915512021801281918764121715931107433411374375915939159759159807098A17159CWK759159EX10128CRTC6143STC3140T39159

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