Four Seasons A/C Receiver Drier 33979
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Four Seasons A/C Receiver Drier 33979
Four Seasons A/C Receiver Drier 33979 - view 2
Four Seasons A/C Receiver Drier 33979 - view 3
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Four Seasons A/C Receiver Drier P/N:33979

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$68.99
MPN: 33979
Item Package Quantity: 1
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Four Seasons A/C Receiver Drier P/N:33979
Four Seasons A/C Receiver Drier P/N:33979
$68.99

Help keep moisture and contaminants out of your truck's air conditioning with the Four Seasons A/C Receiver Drier / Filter Drier, part number 33979. It fits many Kenworth trucks as a direct-fit replacement for the listed applications, among them the 2016-2020 Kenworth KW45, 2018-2020 Kenworth T370 and 2013-2024 Kenworth T680. See the Buyer's Guide tab for the full list and engine details.

This steel filter drier acts as the A/C system's filter, removing moisture and contaminants from the system. Flushing alone cannot remove these contaminants. The part is listed under both names, A/C receiver drier and filter drier.

  • Desiccant bag: high-quality desiccant is used to absorb moisture in the system.
  • Welded construction: quality welds are intended to give a durable, leak-free design.
  • Installation seals included: the necessary gaskets, O-rings and seal come with the drier.
  • Certified production: produced in an ISO/TS16949 and ISO14001 certified facility.

Why replace it: A leaking or open system can saturate the desiccant bag within a few hours, which leaves the drier ineffective. Four Seasons requires replacing the drier to validate compressor warranty, and whenever the A/C system is serviced. Four Seasons is backed by more than 50 years of mobile A/C experience.

Frequently Asked Questions

What does the Four Seasons 33979 A/C receiver drier / filter drier do?

It acts as the A/C system's filter. It removes moisture and contaminants, using a desiccant bag to absorb moisture that flushing alone cannot remove.

Will it fit my 2013-2024 Kenworth T680?

It is listed for the 2013-2024 Kenworth T680, along with the 2016-2020 Kenworth KW45 and the 2018-2020 Kenworth T370. Check the Buyer's Guide tab for your truck.

What comes in the box?

The 33979 drier comes with the necessary gaskets, O-rings and seal for installation.

When should the drier be replaced?

Four Seasons says to replace it whenever the A/C system is serviced and to validate compressor warranty. A leaking or open system can saturate the desiccant within hours.

How is the 33979 built?

Four Seasons describes it as a steel filter drier with quality welds intended for a durable, leak-free design. It is produced in an ISO/TS16949 and ISO14001 certified facility.

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