Four Seasons 33444 A/C Receiver Drier

Four Seasons 33444 Filter Drier Overview

Four Seasons 33444 is a new steel A/C receiver drier built for HVAC systems that use a male insert O-ring connection and a service port. It includes desiccant, a sight glass, and a switch port, making it a practical replacement for BMW and Mercury applications that need reliable refrigerant moisture control.

The Four Seasons Filter Drier line focuses on OE-style HVAC service parts for air conditioning systems that need clean, dry refrigerant flow. This 33444 receiver drier is a direct-fit style component for select BMW 325i, 325is, 325iX, M3, 318i, 318is, 325e, 325es, and 1977 Mercury Monarch factory air applications.

Key Features

• Steel A/C receiver drier construction
• Male insert O-ring inlet and outlet fittings
• Desiccant included to help manage moisture in the system
• Sight glass for visual refrigerant inspection
• Service port and switch port included in the housing design
• New part that meets or exceeds OEM requirements
• Green O-ring seals included
• Four Seasons 33444 part number for easy identification

Detailed Product Description

This receiver drier is part of the Four Seasons Filter Drier product line and is built for automotive air conditioning systems that require moisture removal and refrigerant filtration. The steel body measures 3.000 inches in diameter and 6.000 inches in length, with 3/8-inch inlet and outlet connections. It uses a male insert O-ring connector style and is supplied with a sight glass, service port, and switch port for the specified applications. Four Seasons 33444 is a new replacement part that meets or exceeds OEM specifications and is cross-referenced with Dayco 71324 and UAC RD1324C for the same application.

Compatible With BMW and Mercury HVAC service applications, this receiver drier is listed for 1984-1993 BMW 318i, 318is, 325e, 325es, 325i, 325is, 325iX, and M3 models, plus 1977 Mercury Monarch factory air vehicles built from 2/15/77. If you are replacing a worn A/C receiver drier on a BMW 325i or Mercury Monarch, Four Seasons 33444 provides the correct style of filter drier for the listed fitments.

Common Problems This Part Can Help Address

• Moisture contamination in the A/C system
• Reduced refrigerant flow caused by a restricted drier
• Visible inspection needs through the sight glass
• Service port wear or replacement during HVAC repair
• Pressure switch port replacement on listed BMW applications

Installation Notes and Tips

• Verify the vehicle’s A/C connection style before ordering; this unit uses male insert O-ring fittings.
• Replace O-rings and seals during service to help maintain a proper refrigerant seal.
• Confirm the presence of the correct pressure switch terminal configuration on applicable BMW models.
• Inspect the system for contamination before installing a new receiver drier.
• Evacuate and recharge the A/C system according to factory service procedures after installation.

Quality Assurance

Four Seasons 33444 is a new steel filter drier built to meet or exceed OEM requirements for the listed applications. The part is supplied with desiccant and seals, and it is engineered for the specified BMW and Mercury fitments.