Four Seasons A/C Receiver Drier P/N:33979
Keep moisture and debris out of your A/C loop with the Four Seasons A/C Receiver Drier (MPN 33394), a steel filter drier that drops in as a direct-fit replacement for the 1973-1980 Mercedes-Benz 450SL. It acts as a filter that removes moisture and contaminants from the air conditioning system — the kind of contaminants that flushing alone cannot clear, which is why replacing the drier when the system is serviced is essential.
Replacement of the receiver/filter drier is required to validate compressor warranty and should be replaced any time the system is opened for service. For engine-level applications, see the "Vehicles it fits" section for the full list.
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What vehicle does this drier fit?
It is a direct-fit replacement for the 1973-1980 Mercedes-Benz 450SL. Check the "Vehicles it fits" section to confirm the application for your vehicle.
What does a receiver/filter drier do?
It acts as a filter, removing moisture and contaminants from the A/C system using a desiccant. Such contaminants cannot be removed by flushing, so the drier does the job.
Are gaskets or o-rings included?
Yes. The necessary gaskets, o-rings and seal are included with the unit for easier installation.
When should the drier be replaced?
It must be replaced any time the A/C system is serviced, and replacement is required to validate the compressor warranty.
What is the housing made of?
It is a steel filter drier with quality welds for a durable, leak-free design.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.