Four Seasons 33366 A/C Receiver Drier

Four Seasons 33366 A/C Receiver Drier

Four Seasons 33366 is a steel A/C receiver drier built for factory-air Ford applications that need reliable refrigerant filtration and moisture control. This Filter Drier line is used in HVAC systems where clean, dry refrigerant flow is critical for stable cooling performance.

Key Features

• Steel receiver drier construction
• Desiccant included for moisture absorption
• Male insert O-ring inlet with female O-ring outlet
• Washer not included; bracket not included
• No service port, sight glass, switch port, or fuse plug
• Meets or exceeds OEM requirements
• Overall body diameter: 2.000 in; body length: 8.750 in
• Inlet and outlet size: 3/8 in

Product Details

The Four Seasons Filter Drier 33366 is a direct-fit style A/C receiver drier for select Ford Bronco and Ford F-Series trucks with factory air. It uses a steel body with sealed O-ring connections and built-in desiccant to help remove moisture from the refrigerant circuit. This part number 33366 is listed for 1978 Ford Bronco, 1978 Ford F-100, 1978 Ford F-150, 1978 Ford F-250, 1978 Ford F-350, plus 1973 and 1972 Ford F-100, F-250, and F-350 factory-air applications with the specified tube and mounting configurations.

This part cross-references UAC RD7119C for the same application.

What It Helps Address

• Moisture contamination in the A/C system
• Restricted refrigerant flow caused by a saturated drier
• Reduced cooling performance in factory-air systems
• Contaminant buildup in the receiver/drier circuit
• Leak concerns at worn O-ring connection points

Installation Notes

Verify the inlet and outlet style before installation: male insert O-ring inlet, female O-ring outlet, 3/8 in connections, and no bracket included. Confirm vehicle-specific routing and mounting location on the Ford Bronco or Ford F-Series application before replacing the original receiver drier. Replace O-rings and seals as needed during service, and evacuate and recharge the system according to HVAC service procedures after installation.

Quality Assurance

Four Seasons 33366 is engineered to meet or exceed OEM specifications for the listed applications. The Four Seasons Filter Drier line is built for service replacement in automotive air conditioning systems where moisture control and refrigerant cleanliness are required.