Four Seasons 33436 A/C Receiver Drier

Four Seasons 33436 Filter Drier

Four Seasons 33436 is a steel A/C receiver drier built for HVAC systems that use a pad-mount, male flare connection layout with a service port. It uses desiccant to help manage moisture in the refrigerant circuit and meets or exceeds OEM requirements for the listed applications.

Compatible with 1975-1978 BMW 530i and 1979-1981 BMW 528i, this Four Seasons Filter Drier is a direct-fit service part for select BMW A/C systems. The Four Seasons 33436 part number is also referenced in common aftermarket cross listings for the same application.

Key Features

• Steel filter drier construction
• Male flare inlet and outlet fittings
• Pad-mount inlet fitting type
• Desiccant included in the filter media
• Service port included
• Green O-ring seals included
• No moisture indicator window
• No sight glass and no fuse plug
• New part that meets or exceeds OEM specifications

Product Details

This receiver drier is part of Four Seasons’ Filter Drier line, a cataloged HVAC service component line for A/C repair and replacement. The steel body measures 3.000 inches in diameter and 7.000 inches in length, with 1/2-inch inlet and outlet connections. It is supplied as a washer-not-included style unit with a non-replaceable desiccant design, making it a straightforward replacement for select BMW air conditioning systems that require this configuration.

Use Four Seasons 33436 when servicing BMW 530i and BMW 528i A/C systems that call for a steel receiver drier with male flare fittings and a service port. This part cross-references DENSO Auto Parts (e.g., 4127) for the same application.

Common Problems This Part Helps Address

• Moisture contamination in the A/C refrigerant circuit
• Reduced cooling performance caused by a saturated drier
• Debris accumulation in the HVAC system after component service
• Improper refrigerant flow through an aging receiver drier
• Service replacement needs on select BMW 528i and 530i applications

Installation Notes and Tips

Verify the inlet and outlet fitting style, body dimensions, and service-port configuration before installation. Replace the receiver drier whenever the A/C system has been opened for major service, and confirm that the sealing surfaces are clean before connecting the male flare fittings. Always match the vehicle’s original HVAC layout for 1975-1978 BMW 530i and 1979-1981 BMW 528i applications.

Quality Assurance

Four Seasons 33436 is a new replacement part that meets or exceeds OEM specifications for the listed applications. It is built for direct service use in select BMW A/C systems and follows the dimensional and connection requirements shown above.