Help keep moisture and contaminants out of your truck's air conditioning system with the Four Seasons A/C Receiver Drier / Filter Drier, part number 33542. This steel filter drier is a direct-fit replacement for the listed applications. It fits many Kenworth and Peterbilt trucks, among them the 1988-1990 Kenworth C540, 1989-1993 Kenworth T400 and 1987-1994 Peterbilt 320. See the "Vehicles it fits" section for the full list and engine details.
The drier works as a filter, removing moisture and contaminants from the A/C system. Four Seasons notes that flushing cannot remove these contaminants, so it considers replacing the drier essential. This part is listed under both the receiver drier and filter drier names.
- Steel construction: quality welds are intended to give a durable, leak-free design.
- Desiccant bag: high-quality desiccant absorbs moisture in the system. A leaking or "open" system can saturate the bag within a few hours, which leaves the drier ineffective.
- Installation parts included: the necessary gaskets, o-rings and seal come with the unit to make installation easier.
- Certified production: the drier is produced in an ISO/TS16949 and ISO14001 certified facility and is backed by more than 50 years of Four Seasons mobile A/C experience.
Four Seasons states that the filter drier must be replaced any time the system is serviced, and that replacement is required to validate the compressor warranty. Signs this part may need replacing include an A/C system that has been opened or left leaking. Reduced cooling can also be a sign, if a saturated drier is part of the cause.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What does the Four Seasons 33542 receiver drier / filter drier do?
It acts as a filter for the A/C system, removing moisture and contaminants. A desiccant bag inside absorbs moisture from the system.
Which trucks does the Four Seasons 33542 fit?
It fits many Kenworth and Peterbilt trucks, including the 1988-1990 Kenworth C540, 1989-1993 Kenworth T400 and 1987-1994 Peterbilt 320. See the "Vehicles it fits" section for the full list.
What comes in the box?
You get the steel filter drier along with the necessary gaskets, o-rings and seal, which make installation easier.
When should the receiver drier be replaced?
Four Seasons says to replace it any time the A/C system is serviced. Replacing it is also required to validate the compressor warranty.
Why can't I just flush the system instead of replacing the drier?
Four Seasons notes that flushing cannot remove the contaminants the drier handles. A leaking or open system can also saturate the desiccant bag within a few hours, which makes the drier ineffective.
