Four Seasons 39344 A/C Expansion Valve - Rear
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Four Seasons
 Expansion Valve

Four Seasons 39344 A/C Expansion Valve - Rear

Brand Four Seasons 39344
Position Rear
Color Brass
Refrigerant Type R134A
Type TXV
Product line Expansion Valve
Fits Toyota · 4 vehicles

TXV design. Precisely meters refrigerant flow for efficient A/C performance.

Brass construction. Durable material helps resist wear in HVAC service.

R134A compatible. Built for systems using R134A refrigerant.

Cross-references Four Seasons 39344, Global Parts Distributors LLC 3411819 and UAC EX10450C for the same application. See all 10.

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Four Seasons 39344 A/C Expansion Valve

The Four Seasons 39344 expansion valve is a brass TXV built for R134A air conditioning systems. It regulates refrigerant flow at the rear HVAC circuit to help maintain proper evaporator performance in the vehicle’s A/C system.

Key Features

  • Brand: Four Seasons Expansion Valve line
  • Part number: 39344
  • Type: TXV thermal expansion valve
  • Material/color: Brass
  • Refrigerant type: R134A
  • Rear A/C application for select Toyota Sienna models

Product Details

Four Seasons 39344 is an A/C expansion valve for rear HVAC service on 2007-2010 Toyota Sienna models. As a TXV, it meters refrigerant into the evaporator based on system demand, helping the rear air conditioning circuit maintain stable cooling performance. This part cross-references UAC EX10450C for the same application.

The Four Seasons Expansion Valve product line focuses on replacement HVAC components for service work where accurate refrigerant control matters. For technicians and buyers searching for a rear A/C expansion valve for Toyota Sienna, part number 39344 is a direct match for the listed applications.

What It Helps Address

  • Weak or inconsistent rear A/C cooling
  • Improper refrigerant metering at the evaporator
  • Rear HVAC performance issues in Toyota Sienna service repairs
  • Expansion valve restriction or sticking in R134A systems
  • Temperature control problems in the rear air conditioning circuit

Installation Notes and Tips

Fits 2008-2010 Toyota Sienna, Rear. Fits 2007 Toyota Sienna, Rear, From 1/07. Confirm the rear HVAC configuration and refrigerant system before installation. Replace only with the correct R134A TXV application and follow proper evacuation, leak check, and recharge procedures after service.

Quality Assurance

Four Seasons is a recognized aftermarket HVAC brand with a broad catalog of replacement climate-control parts. Part number 39344 is built for the specified rear Toyota Sienna applications and the R134A system type listed above.

Related reading

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010ToyotaSiennaRearExpansion Valve
2009ToyotaSiennaRearExpansion Valve
2008ToyotaSiennaRearExpansion Valve
2007ToyotaSiennaRearFrom 1/07; Expansion Valve
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 39344Global Parts Distributors LLC — 3411819UAC — EX10450C2173447596588073078851508110A17344CWK759658T39344