Four Seasons A/C Expansion Valve 39454
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Four Seasons A/C Expansion Valve 39454
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Four Seasons A/C Expansion Valve P/N:39454

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$24.99
MPN: 39454
Item Package Quantity: 1
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Four Seasons A/C Expansion Valve P/N:39454
Four Seasons A/C Expansion Valve P/N:39454
$24.99

Control the flow of refrigerant into the evaporator with the Four Seasons A/C Expansion Valve 39454, a block-type valve that meters high-pressure liquid refrigerant into the evaporator core to regulate cabin cooling. It drops in as a direct-fit replacement for the 2008-2015 Smart Fortwo (All engines).

  • Block-type design: a block valve that regulates refrigerant flow into the evaporator; supplied without a solenoid (w/o Solenoid).
  • Aluminum body: aluminum construction with precision-machined ports for the liquid and suction connections.
  • Application-specific seals included: comes with four O-rings (24611, 24649, 24622, 24642) to properly complete the replacement.
  • R134A calibrated: engineered to meet or exceed OEM fit, form and function requirements and calibrated for cabin comfort on R134A systems.

The expansion valve senses evaporator conditions and adjusts how much refrigerant passes into the core. If a stuck or worn expansion valve is behind weak cooling, inconsistent cabin temperatures, or frost/icing at the evaporator, replacing it addresses that cause; diagnose the system before ordering, as those signs can have other causes. Mounting hardware is not included.

Interchange: Manufacturer part number 39454.

This part cross-references / interchanges with the following part numbers:

217454, T39454, 759454, 39454, 807362, 3411530, 4518350072, A17454, 3131297, EX10418C

Frequently Asked Questions

What does this expansion valve do?

It meters high-pressure liquid refrigerant into the evaporator, controlling how much refrigerant flows based on evaporator conditions to regulate cabin cooling.

What vehicle does the 39454 fit?

It is a direct-fit replacement for the 2008-2015 Smart Fortwo (All engines). Check the Buyer's Guide tab to confirm fitment for your vehicle.

Does it include O-rings or seals?

Yes. It comes with four application-specific O-rings (24611, 24649, 24622, 24642) to properly complete the replacement.

Does this valve include a solenoid?

No. This is a block-type expansion valve supplied without a solenoid (w/o Solenoid).

Is mounting hardware included?

No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.

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