Four Seasons A/C Receiver Drier 33438
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Four Seasons A/C Receiver Drier 33438
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Four Seasons A/C Receiver Drier P/N:33438

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$28.99
MPN: 33438
Item Package Quantity: 1
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Four Seasons A/C Receiver Drier P/N:33438
Four Seasons A/C Receiver Drier P/N:33438
$28.99

Keep your BMW's air conditioning system clean and dry with the Four Seasons A/C Receiver Drier / Filter Drier 33438. This steel filter drier is a direct-fit replacement for the listed applications, including the 1984-1985 BMW 318 SERIES and 318I, the 1986-1988 BMW 325, the 1984-1993 BMW 325 SERIES, the 1984-1987 BMW 325E, the 1986-1987 BMW 325ES, the 1987-1993 BMW 325I, the 1987-1991 BMW 325IS, the 1988-1991 BMW 325IX, and the 1990-1991 BMW M3 — see the Buyer's Guide tab for the full list.

  • Filters and dries the refrigerant: acts as a filter that removes moisture and contaminants from the A/C system — debris that cannot be cleared by flushing.
  • Desiccant absorption: a desiccant bag absorbs moisture in the system; a leaking or "open" system can saturate the bag within a few hours, making the drier ineffective.
  • Quality welds: welded for a durable, leak-free design.
  • Install hardware included: the necessary gaskets, o-rings and seal are included for installation.

The receiver drier must be replaced anytime the A/C system is opened or serviced, and replacement is typically required to validate the compressor warranty. If a saturated or contaminated drier is the cause of poor A/C performance, installing MPN 33438 replaces it.

Frequently Asked Questions

What does this Four Seasons drier do?

It acts as a filter that removes moisture and contaminants from your BMW's A/C refrigerant, using a desiccant bag to absorb moisture that cannot be cleared by flushing the system.

Which vehicles does it fit?

Listed BMW applications, including the 1984-1985 318 SERIES and 318I, 1986-1988 325, 1984-1993 325 SERIES, 325E, 325ES, 325I, 325IS, 325IX and the 1990-1991 M3. Check the Buyer's Guide tab for the full list.

Are seals included with this drier?

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

When should the receiver drier be replaced?

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

Why is it called both a receiver drier and a filter drier?

It is listed as an A/C Receiver Drier, while the manufacturer describes it as a steel filter drier — it is the same part known under both names.

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