HomeHVAC > A/C Flow RestrictorsFour Seasons 39019 A/C Expansion Valve - Rear
Part #: 39019

Four Seasons 39019 A/C Expansion Valve - Rear

Expansion Valve, Rear
12 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: Honda and Acura, Pilot and MDX
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Reliable A/C Expansion Valve for Acura MDX and Honda Pilot

The Four Seasons Expansion Valve 39019 is designed to regulate refrigerant flow in your vehicle's air conditioning system. Engineered for use with R134a refrigerant, this brass TXV type valve ensures precise temperature control and efficient A/C performance in Acura MDX and Honda Pilot models.

  • Constructed from durable brass for long-lasting performance
  • Compatible with R134a refrigerant systems
  • TXV (Thermostatic Expansion Valve) type for accurate refrigerant metering
  • Specifically designed for Acura MDX and Honda Pilot vehicles
  • Part number 39019 for easy identification and replacement

About the Four Seasons Expansion Valve Product Line

The Expansion Valve product line from Four Seasons focuses on delivering precise refrigerant flow control components for automotive HVAC systems. This line includes TXV type valves like part number 39019, which are engineered to maintain optimal air conditioning efficiency and temperature regulation in compatible vehicles. The Expansion Valve series is tailored to meet the specific requirements of various makes and models, including Acura and Honda applications.

Product Details and Specifications

This A/C expansion valve is made from brass, providing corrosion resistance and durability under typical automotive operating conditions. It is designed for use with R134a refrigerant, the standard refrigerant type for many modern vehicles. The TXV (Thermostatic Expansion Valve) design allows the valve to modulate refrigerant flow based on temperature and pressure, improving the overall efficiency of the air conditioning system. The Four Seasons 39019 valve is compatible with Acura MDX and Honda Pilot models, ensuring proper fitment and function.

Common Applications and Issues Addressed

  • Regulates refrigerant flow to maintain consistent cabin temperature
  • Prevents compressor damage caused by improper refrigerant metering
  • Helps resolve issues with fluctuating or insufficient cooling performance
  • Addresses A/C system inefficiencies related to expansion valve failure
  • Supports proper operation of R134a refrigerant systems in Acura MDX and Honda Pilot

Installation Notes and Tips

  • Ensure compatibility with your vehicle’s make and model before installation
  • Follow manufacturer guidelines for refrigerant handling and system evacuation
  • Inspect related A/C components for wear or damage during replacement
  • Use proper tools to avoid damaging the brass valve body
  • Professional installation is recommended to maintain system integrity

Quality Assurance and Warranty

Four Seasons parts are manufactured to meet or exceed OEM specifications, providing reliable performance in automotive HVAC systems. The Expansion Valve 39019 undergoes quality control testing to ensure durability and proper function. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandFour Seasons
Part Number39019
PositionExpansion Valve, Rear
ColorBrass
Refrigerant TypeR134A
TypeTXV

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
2008HondaPilotRearExpansion Valve
2007HondaPilotRearExpansion Valve
2006AcuraMDXRearExpansion Valve
2006HondaPilotRearExpansion Valve
2005AcuraMDXRearExpansion Valve
2005HondaPilotRearExpansion Valve
2004AcuraMDXRearExpansion Valve
2004HondaPilotRearExpansion Valve
2003AcuraMDXRearExpansion Valve
2003HondaPilotRearExpansion Valve
2002AcuraMDXRearExpansion Valve
2001AcuraMDXRearExpansion 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:

1113901915508501804651918986321701931107493411426375901939019475204375901980220S3VA51807083A1719CWK759019EX529465CT39019

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