Four Seasons 33400 A/C Receiver Drier

Four Seasons 33400 A/C Receiver Drier

The Four Seasons 33400 is a steel A/C receiver drier built for HVAC service on select Mercedes-Benz applications. It uses a desiccant-based filter drier design with male insert O-ring connections, a sight glass, and a switch port for system monitoring.

For Mercedes-Benz 190E owners searching for a replacement A/C receiver drier, this Four Seasons Filter Drier line part is a direct-fit service component for restoring refrigerant system protection and moisture control.

Key Features

• Steel filter drier construction
• Desiccant included; desiccant is not replaceable
• Male insert O-ring inlet and outlet fittings
• Sight glass included for visual refrigerant inspection
• Fuse plug included
• Switch port included; no service port
• Gaskets/seals included
• Meets or exceeds OEM requirements
• New replacement part

Product Details

Four Seasons 33400 is part of the Filter Drier product line and is engineered as an A/C receiver drier for automotive HVAC systems. The steel body measures 3.000 inches in diameter and 7.000 inches in overall length, with 3/8-inch inlet and outlet connections. It uses a male insert O-ring connector style and includes a sight glass for system observation. This receiver drier is built for 1984-1993 Mercedes-Benz 190E applications and is a practical choice when replacing a worn or moisture-saturated A/C component. This part cross-references UAC RD10000C for the same application.

What It Helps Address

• Moisture contamination in the A/C system
• Reduced cooling performance from a saturated drier
• Refrigerant flow issues related to a restricted receiver drier
• Service replacement needs on Mercedes-Benz 190E HVAC systems
• Visual inspection needs through the integrated sight glass

Installation Notes and Tips

Replace the receiver drier any time the A/C system has been opened for service, or when the existing unit shows signs of age or contamination. Verify 3/8-inch inlet and outlet fitment, male insert O-ring connection style, and switch port requirements before installation. Always inspect and replace sealing surfaces as needed, and evacuate and recharge the system according to factory service procedures after installation.

Quality Assurance

Four Seasons lists this part as meeting or exceeding OEM requirements. It is a new steel filter drier designed for dependable HVAC service on 1984-1993 Mercedes-Benz 190E models.