Four Seasons A/C Receiver Drier 33990
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Four Seasons A/C Receiver Drier P/N:33990

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$71.99
MPN: 33990
Item Package Quantity: 1
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Four Seasons A/C Receiver Drier P/N:33990
Four Seasons A/C Receiver Drier P/N:33990
$71.99

Keep your air conditioning system clean and dry with the Four Seasons A/C Receiver Drier 33990, a steel filter drier that drops in as a direct-fit replacement for the 2009-2013 Peterbilt 365, 367, 384, 386, 388 and 389, plus the 2011-2013 Peterbilt 382. See the Buyer's Guide tab for the full application list.

The receiver drier filters the refrigerant, removing moisture and contaminants from the A/C system — debris that flushing alone cannot clear, which is why replacement is recommended whenever the system is opened or serviced. Moisture absorption is handled by an internal desiccant; a leaking or "open" system can saturate that desiccant within a few hours, leaving the drier ineffective.

  • Steel filter drier: steel construction with quality welds for a durable, leak-free design.
  • Desiccant absorption: high-quality desiccant absorbs moisture from the refrigerant circuit.
  • Install-ready: the necessary gaskets, o-rings and seal are included for easier installation.
  • Compressor service: replacing the drier is required to validate compressor warranty and should be done anytime the system is serviced.

Backed by Four Seasons' decades of mobile A/C experience and produced in an ISO/TS16949 and ISO14001 certified facility.

Frequently Asked Questions

What does the A/C receiver drier do?

It filters the refrigerant, removing moisture and contaminants from the air conditioning system so they don't circulate and damage other components.

Which vehicles does the 33990 fit?

It's a direct-fit replacement for the 2009-2013 Peterbilt 365, 367, 384, 386, 388 and 389, and the 2011-2013 Peterbilt 382. Check the Buyer's Guide tab to confirm your vehicle.

Are seals included?

Yes. The necessary gaskets, o-rings and seal are included to make installation easier.

When should I replace the receiver drier?

It should be replaced anytime the A/C system is opened or serviced, and replacement is required to validate the compressor warranty.

Why can't the system just be flushed instead?

Flushing cannot remove the moisture and contaminants the drier captures, so replacing the receiver drier is essential whenever the system is serviced.

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