Four Seasons 33728 A/C Receiver Drier

Four Seasons 33728 A/C Receiver Drier

Four Seasons 33728 is a steel A/C receiver drier built for HVAC systems that use a male insert O-ring connection and switch port setup. It includes desiccant and a sight glass, and it meets or exceeds OEM requirements for direct replacement service.

For drivers searching for an A/C receiver drier for Honda Civic or Toyota Corolla applications, this Four Seasons Filter Drier line focuses on OE-style fit and system moisture control. Part number 33728 is also referenced in aftermarket cross listings for common HVAC service applications.

Key Features

• Steel body construction for HVAC durability
• Male insert O-ring inlet and outlet fittings
• Built-in desiccant for moisture removal
• Sight glass included for system inspection
• Switch port design with two switch ports
• Meets or exceeds OEM specifications
• Washer not included; mounting bracket not included
• Compatible with service applications using 3/8 in. inlet and outlet sizing

Product Details

The Four Seasons Filter Drier product line is built for air conditioning service where moisture and contamination control are critical. This receiver drier uses a steel housing, male insert O-ring connectors, and a non-replaceable desiccant element to support refrigerant system cleanliness. The unit measures 3.000 inches in body diameter and 10.000 inches in body length, with a 76 mm diameter and 254 mm overall length.

Part number 33728 is a direct-fit style A/C receiver drier for vehicles that use this configuration, including select Honda Civic and Toyota Corolla HVAC service applications. This part cross-references UAC RD11212C and AP Exhaust 7567 for the same application.

Common A/C Problems It Addresses

• Excess moisture in the refrigerant circuit
• Reduced cooling performance from contaminated refrigerant flow
• Cloudy or difficult-to-read system inspection through the sight glass
• Service replacement needs after compressor or system repair
• Fitment issues on systems requiring male insert O-ring connections

Installation Notes

• Verify inlet and outlet connection style before installation.
• Replace O-rings and seals during A/C service; green O-rings are included.
• Confirm switch port requirements on the vehicle before ordering.
• Inspect the system for contamination and leaks before charging refrigerant.
• Follow OEM service procedures for evacuation and recharge.

Quality Assurance

Four Seasons 33728 is manufactured to meet or exceed OEM specifications for A/C receiver drier replacement. The steel construction, desiccant charge, and OE-style connector design support consistent HVAC service performance in compatible Honda Civic and Toyota Corolla applications.