Four Seasons A/C Receiver Drier 33365
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Four Seasons A/C Receiver Drier 33365
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A/C Receiver Drier for 2010-2011 Western Star 4900EX & More - Four Seasons 33365

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$38.99
MPN: 33365
Item Package Quantity: 1
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Four Seasons A/C Receiver Drier P/N:33365
Four Seasons A/C Receiver Drier P/N:33365
$38.99

Keep moisture and debris out of the A/C circuit with the Four Seasons A/C Receiver Drier, MPN 33365. This steel filter drier drops in as a direct-fit replacement across a wide range of heavy trucks, including the 1984-1987 Autocar AT, 1981-1994 Kenworth C500, 1984-1994 Kenworth W900, 1983-1991 Mack R, 1965-1976 Peterbilt 282, and 2010-2011 Western Star 4900EX — see the Buyer's Guide tab for the full list of 40 applications.

  • Filters the refrigerant: Acts as a filter to remove moisture and contaminants from the air conditioning system — contaminants that cannot be removed by flushing, which is why replacing the drier is essential when the system is opened.
  • Desiccant absorption: Uses a desiccant to absorb moisture. A leaking or "open" system can saturate the desiccant within a few hours, so a fresh drier is needed once the system has been exposed.
  • Quality welds: Built with quality welds for a durable, leak-free design.
  • Install hardware included: Necessary gaskets, o-rings and seal are included for the installation.

Backed by Four Seasons' decades of mobile A/C experience, this drier should be replaced any time the system is serviced and is required to validate compressor warranty.

Frequently Asked Questions

What does this receiver drier do?

It acts as a filter, removing moisture and contaminants from the A/C system. These contaminants can't be flushed out, so replacing the drier restores that filtering function when the system is opened.

Are gaskets and seals included?

Yes. The necessary gaskets, o-rings and seal are included with this unit for the installation.

When should I replace the receiver drier?

Four Seasons advises replacing it any time the A/C system is serviced or opened, since a leaking or open system can saturate the desiccant within a few hours.

Does this fit my truck?

It's a direct-fit replacement for 40 heavy-truck applications spanning Autocar, Kenworth, Mack, Peterbilt and Western Star. Check the Buyer's Guide tab to confirm the exact year and model.

Does replacing the drier affect compressor warranty?

Per Four Seasons, replacement of the filter drier is required to validate compressor warranty and it must be replaced any time the system is serviced.

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