Four Seasons A/C Receiver Drier 33321
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Four Seasons A/C Receiver Drier 33321
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Four Seasons A/C Receiver Drier P/N:33321

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$26.99
MPN: 33321
Item Package Quantity: 1
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Four Seasons A/C Receiver Drier P/N:33321
Four Seasons A/C Receiver Drier P/N:33321
$26.99

Keep the A/C system dry and free of contaminants with the Four Seasons A/C Receiver Drier / Filter Drier (MPN 33321), a steel filter drier that installs as a direct-fit replacement for the listed applications — including the 1978-1983 Porsche 911, 1983-1991 Porsche 944, 1983-1985 Mazda GLC, 1980-1984 Volkswagen Vanagon and 1994-1997 Land Rover Defender, plus Chrysler models and MACK MID-LINER trucks. See the Buyer's Guide tab for the full year/make/model list.

The receiver/filter drier works as a filter, pulling moisture and contaminants out of the refrigerant circuit — debris that flushing alone can't remove, which is why the drier is replaced whenever the system is opened. Moisture is captured by an internal desiccant; a leaking or "open" system can saturate that desiccant within a few hours and leave the unit ineffective.

  • Steel construction: built as a steel filter drier for the A/C circuit.
  • Desiccant: high-quality desiccant for appropriate moisture absorption.
  • Quality welds: for a durable, leak-free design.
  • Install hardware included: the necessary gaskets, o-rings and seal come in the box.

Per Four Seasons, replacing the drier any time the A/C system is serviced is also required to validate the compressor warranty.

Frequently Asked Questions

What does this receiver drier do?

It acts as a filter, removing moisture and contaminants from the A/C refrigerant circuit and holding them in an internal desiccant so they don't circulate through the system.

What is the MPN 33321 drier made of?

The manufacturer describes it as a steel filter drier.

Are gaskets and o-rings included?

Yes. The necessary gaskets, o-rings and seal are included for installation.

Will this fit my vehicle?

It's a direct-fit replacement for the listed applications, such as the 1978-1983 Porsche 911, 1983-1985 Mazda GLC and 1994-1997 Land Rover Defender. Check the Buyer's Guide tab for the full list.

When should the drier be replaced?

Any time the A/C system is opened or serviced. A leaking or open system can saturate the desiccant within hours, and Four Seasons notes replacement is required to validate the compressor warranty.

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