Four Seasons A/C Evaporator Core P/N:54811
Four Seasons 64178 A/C evaporator core for the 2021-2023 Chevrolet Trailblazer and other vehicles removes heat from cabin air as refrigerant flows through it. The core design meets or exceeds OE performance and efficiency.
Weak cooling from the vents or refrigerant that keeps escaping can be signs of a leaking evaporator core. These signs alone do not prove this part is the problem, since a failed compressor is another common cause. Each vehicle takes one core.
It fits the 2021-2023 Chevrolet Trailblazer and the 2023 Buick Encore GX.
Fit and size
Build and materials
One A/C evaporator core with gaskets, o-rings or seals.
Interchange: 42703744 · 42747631 · 42752021 · 4712305 · 289231 · A89231 · 594148 · EV9409351PFC
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This part cross-references / interchanges with the following part numbers:
Does the Four Seasons 64178 A/C evaporator core fit the 2023 Buick Encore GX?
Yes. Four Seasons 64178 fits the 2023 Buick Encore GX and the 2021-2023 Chevrolet Trailblazer, with one core per vehicle.
Does this A/C evaporator core come with gaskets, o-rings or seals?
Yes. This evaporator core comes with gaskets, o-rings or seals to replace it properly.
Are the inlet and outlet fittings on this evaporator core male or female?
Both the inlet and outlet fittings are male.
Can a leaking evaporator core cause weak A/C cooling?
Yes, weak cooling from the vents and refrigerant that keeps escaping can both be signs of a leaking core. A shop can test the A/C system to confirm.
Does Four Seasons 64178 interchange with 42703744?
Yes. 42703744 is one of the numbers on the Interchange line for Four Seasons 64178.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.