Four Seasons 33321 A/C Receiver Drier

Four Seasons 33321 A/C Receiver Drier

Four Seasons 33321 is a steel A/C receiver drier built for HVAC systems that use male insert O-ring connections and a switch port. It includes desiccant and a sight glass, and it meets or exceeds OEM requirements for direct replacement service on select Porsche, Volkswagen, Chrysler, Chevrolet, and Land Rover applications.

As part of the Four Seasons Filter Drier line, this receiver drier is made for system protection and refrigerant management in automotive air conditioning service. The steel body, 3/8 in. inlet and outlet fittings, and included seals support a clean, OE-style replacement for vehicles such as the Porsche 944, Porsche 911, and Volkswagen Vanagon.

Key Features

• Steel filter drier construction for automotive A/C service
• Male insert O-ring inlet and outlet fittings
• 3/8 in. inlet and outlet diameter
• Desiccant included to help manage moisture in the system
• Sight glass included for visual refrigerant inspection
• Switch port included; service port not included
• Meets or exceeds OEM specifications
• New replacement part with gasket/seals included

Detailed Description

Four Seasons 33321 receiver drier is engineered for HVAC systems that require a steel filter drier with a 2.500 in. body diameter and 8.000 in. body length. The unit uses male insert O-ring connectors, includes a 0.250 in. switch port, and does not use a moisture indicator window, fuse plug, or replaceable desiccant. This configuration supports factory-style service on applications that call for a receiver drier with sight glass and O-ring sealing.

Compatible vehicle coverage includes Fits 1997 Land Rover Defender 90, N/A; Fits 1994-1995 Land Rover Defender 90, N/A; Fits 1992 Porsche 968, N/A; Fits 1983-1991 Porsche 944, N/A; Fits 1990 Porsche 911, N/A; Fits 1987-1988 Chevrolet Sprint, N/A; Fits 1985 Chevrolet Sprint, N/A; Fits 1987-1988 Porsche 924, N/A; Fits 1980-1984 Volkswagen Vanagon, N/A; Fits 1978-1983 Porsche 911, N/A; Fits 1976 Chrysler New Yorker, N/A; Fits 1961-1963 Chrysler 300, N/A; Fits 1959-1963 Chrysler Imperial, N/A; and Fits 1961-1963 Chrysler Newport, N/A.

This part cross-references Monroe Shocks & Struts 172115 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 management in the receiver/drier section of the HVAC system
• Service replacement needs on older Porsche, Volkswagen, Chrysler, Chevrolet, and Land Rover A/C systems
• Leak-prone sealing surfaces when the original drier is worn or corroded

Installation Notes and Tips

Verify inlet and outlet sizing, O-ring style, and switch-port requirements before installation. Replace the O-rings with the included green seals, evacuate the system properly, and recharge with the correct refrigerant and oil specification for the vehicle. Because this unit is not supplied with a mounting bracket or service port, confirm the original mounting and service layout before ordering.

Quality Assurance

Four Seasons 33321 is a new replacement receiver drier that meets or exceeds OEM specifications for the listed applications. The Four Seasons Filter Drier line is built for direct-fit HVAC service where correct sealing, moisture control, and system reliability matter.