Four Seasons 33398 A/C Receiver Drier

Four Seasons 33398 A/C Receiver Drier

Four Seasons 33398 is a steel A/C receiver drier built for HVAC service on select Mercedes-Benz applications. It uses a male flare inlet and outlet, includes a desiccant element, and meets or exceeds OEM requirements for direct replacement service.

As part of the Four Seasons Filter Drier line, this receiver drier is built for refrigerant system moisture control and contamination management in automotive air conditioning systems. The steel body measures 3.000 inches in diameter and 6.500 inches in length, with a switch port and green O-ring seals included for the specified connection points.

Key Features

• Brand: Four Seasons Filter Drier
• Part number: 33398
• Steel receiver drier construction
• Male flare inlet and outlet fittings
• Desiccant included; not replaceable
• Switch port included; no service port
• No sight glass and no moisture indicator window
• Meets or exceeds OEM specifications
• Fits Mercedes-Benz 380SL and 380SLC applications

Detailed Description

Four Seasons 33398 is an A/C receiver drier for HVAC systems that need moisture removal and refrigerant filtration. The steel housing, flare-style connections, and OEM-level dimensions support a direct-fit replacement on 1981-1985 Mercedes-Benz 380SL and 1981 Mercedes-Benz 380SLC models. This part number 33398 is a practical choice when servicing an aging air conditioning system that needs a new receiver drier with the correct inlet and outlet sizing.

This part cross-references Monroe Shocks & Struts 172446 for the same application.

What It Helps Address

• Moisture contamination in the A/C refrigerant circuit
• Reduced cooling performance caused by a saturated drier
• Debris control in the receiver side of the HVAC system
• Service replacement for worn or aging A/C drier assemblies
• Fitment needs for Mercedes-Benz 380SL and 380SLC A/C repair

Installation Notes and Tips

Verify inlet and outlet flare sizes before installation: 3/8 inch inlet and 1/2 inch outlet. Confirm the switch port and bracket configuration match the original system layout, and replace any disturbed seals during service. Because the desiccant is not replaceable, install the receiver drier only after the system is ready for evacuation and recharge.

Quality Assurance

Four Seasons lists this receiver drier as meeting or exceeding OEM requirements. The steel construction, included seals, and application-specific fitment support dependable HVAC service on the listed Mercedes-Benz models.