A/C Receiver Drier for 2008-2012 Freightliner Columbia & More - Four Seasons 33998

Help pull moisture and contaminants out of your air conditioning system with the Four Seasons A/C Receiver Drier / Filter Drier, part number 33998. It fits many Freightliner trucks, among them the 2008-2012 Freightliner Columbia, 2008-2011 Freightliner Cascadia and 2008-2011 Freightliner Century Class. See the "Vehicles it fits" section for the full list and engine details. Four Seasons calls this part a steel filter drier, so it is listed under both names.

• Filters the A/C system: The drier removes moisture and contaminants from the air conditioning system. Four Seasons notes that flushing cannot remove these contaminants, so replacing the drier is essential.
• Desiccant bag: High-quality desiccant inside a bag absorbs moisture in the system. A leaking or "open" system can saturate the bag within a few hours, which makes the drier ineffective.
• Welded steel construction: The steel unit is built with quality welds intended to keep it leak-free.
• Installation seals included: The necessary gaskets, O-rings and seal come in the box for easier installation.

Four Seasons states that the accumulator/filter drier must be replaced any time the system is serviced. Replacement is also required to validate compressor warranty. If your A/C system has leaked or been opened for repair, the desiccant may already be saturated, which is a sign this part may need replacing.

The drier is produced in an ISO/TS16949 and ISO14001 certified facility. Four Seasons backs it with more than 50 years of mobile A/C experience.