Four Seasons A/C Receiver Drier 33537
Four Seasons A/C Receiver Drier 33537 - view 2
Four Seasons A/C Receiver Drier 33537 - view 3
Four Seasons A/C Receiver Drier 33537 - view 4
Four Seasons A/C Receiver Drier 33537 - view 5
Four Seasons A/C Receiver Drier 33537 - view 6
Four Seasons A/C Receiver Drier 33537 - view 7
Four Seasons A/C Receiver Drier 33537
Four Seasons A/C Receiver Drier 33537 - view 2
Four Seasons A/C Receiver Drier 33537 - view 3
Four Seasons A/C Receiver Drier 33537 - view 4
Four Seasons A/C Receiver Drier 33537 - view 5
Four Seasons A/C Receiver Drier 33537 - view 6
Four Seasons A/C Receiver Drier 33537 - view 7

A/C Receiver Drier for 2002-2015 Western Star 4900EX & More - Four Seasons 33537

Be the first to review this product
$37.99
MPN: 33537
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

Ask an Expert
Four Seasons A/C Receiver Drier P/N:33537
Four Seasons A/C Receiver Drier P/N:33537
$37.99

Keep your A/C system clean and dry with the Four Seasons A/C Receiver Drier 33537, a steel filter drier that installs as a direct-fit replacement across a wide range of heavy-duty trucks — including the Kenworth C500, K100E, T600A, T800 and W900, the Peterbilt 357, 377, 378 and 379, and the Western Star 4800, 4900 and 6900. With 57 applications spanning 1982-2015, see the Buyer's Guide tab for the full list and the engine details for your truck.

  • Steel construction: built with quality welds for a durable, leak-free design.
  • High-quality desiccant: uses a desiccant bag to absorb moisture from the refrigerant circuit for appropriate absorption.
  • Install hardware included: comes with the necessary gaskets, o-rings and seal for the job.
  • Quality build: produced in an ISO/TS16949 & ISO14001 certified facility.

The filter drier acts as a filter, removing moisture and contaminants that cannot be cleared by flushing the air conditioning system. A leaking or open system can saturate the desiccant bag within a few hours, so this component must be replaced anytime the system is serviced. Backed by over 50 years of mobile A/C experience from Four Seasons.

Frequently Asked Questions

What does the A/C receiver drier do?

It acts as a filter, removing moisture and contaminants from the air conditioning system using an internal desiccant. These contaminants cannot be removed by flushing, so replacing the drier is essential.

Are installation gaskets and o-rings included?

Yes. This filter drier comes with the necessary gaskets, o-rings and seal for installation.

Do I need to replace the drier when servicing the A/C system?

Yes. It must be replaced anytime the system is opened or serviced. Many compressor warranties also require replacing the drier.

Why can the desiccant become saturated?

A leaking or "open" system can cause the desiccant bag to saturate within a few hours, making the filter drier ineffective, so it should be replaced when the system has been open.

Will this fit my truck?

It fits 57 applications across Kenworth, Peterbilt and Western Star models from 1982-2015. Check the Buyer's Guide tab to confirm the correct fit for your specific vehicle.

Related Products

!