Keep moisture and debris out of your air conditioning system with the Four Seasons A/C Receiver Drier / Filter Drier 33533, a steel replacement drier for a range of heavy-duty Freightliner and Peterbilt trucks. It drops in as a direct-fit replacement across the listed applications, including the 1994-1996 Freightliner FLB, 1990-1996 Freightliner FLC112, 1991 Freightliner FLC120, 1991-1996 Freightliner FLD112 and 1990-1996 Freightliner FLD120, plus Peterbilt 220 (2007, 2010, and 2013-2014), 270 (2001-2003), 320 (1994-2014), 357, 377, 378 and 379 (1993-1999), 375 (1993-1996) and 385 (1995-1999). See the "Vehicles it fits" section for the full list and engine details.
- Filters and dries: acts as a filter, removing moisture and contaminants from the A/C system that cannot be removed by flushing.
- Desiccant absorption: uses a desiccant bag to absorb moisture from the system.
- Leak-free design: quality welds for a durable, leak-free steel build.
- Install-ready: necessary gaskets, o-rings and seal are included.
Replacing the receiver/filter drier is required to validate compressor warranty and it should be replaced any time the system is opened or serviced, since a leaking or "open" system can saturate the desiccant and leave the drier ineffective.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What does the Four Seasons 33533 do?
It acts as a filter for the A/C system, removing moisture and contaminants that flushing cannot remove. A desiccant bag inside absorbs moisture to help protect the rest of the system.
Will this receiver drier fit my truck?
It is a direct-fit replacement for the listed Freightliner and Peterbilt applications, such as the 1990-1996 FLD120 and 1994-2014 Peterbilt 320. Check the "Vehicles it fits" section to confirm your exact vehicle.
Are seals and o-rings included?
Yes. Per the manufacturer, the necessary gaskets, o-rings and seal are included for installation.
When should the receiver/filter drier be replaced?
It should be replaced any time the A/C system is opened or serviced, and replacement is required to validate the compressor warranty. A leaking or open system can saturate the desiccant within hours.
What is this drier made of?
It is a steel filter drier with quality welds for a durable, leak-free design.
