Four Seasons 33360 A/C Receiver Drier

Four Seasons 33360 Filter Drier for Porsche 928

The Four Seasons 33360 is a steel A/C receiver drier built for HVAC systems that need moisture control, refrigerant filtration, and stable pressure regulation. It is a direct-fit option for Porsche 928 applications from 1978-1991 and is listed as meeting or exceeding OEM requirements.

Key Features

• Steel filter drier construction for A/C system durability
• Built-in desiccant to absorb moisture in the refrigerant circuit
• Female outlet with male insert O-ring inlet for OE-style connections
• Sight glass included for visual refrigerant condition checks
• Pressure relief valve and switch port included
• Gaskets and seals included
• New part, not remanufactured
• Four Seasons 33360 cross-references Bosch 3984 and Continental 49022 for the same application

Product Details

This Four Seasons Filter Drier line is focused on serviceable HVAC components that support refrigerant cleanliness and moisture removal. Part number 33360 uses a steel body with a 3.000-inch diameter and 6.500-inch length, plus a 3/8-inch inlet and 1/2-inch outlet configuration. The unit also includes a sight glass, switch port, and pressure relief valve, making it a practical replacement for Porsche 928 A/C service where proper refrigerant flow and system protection matter. Four Seasons 33360 is a direct replacement for 1978-1991 Porsche 928 filter drier applications.

What It Helps Address

• Moisture contamination inside the A/C system
• Debris that can restrict refrigerant flow
• Reduced cooling performance from a saturated receiver drier
• Pressure irregularities in the HVAC circuit
• Service issues on Porsche 928 A/C systems with worn original driers

Installation Notes and Tips

Verify inlet and outlet fitting style before installation, since this unit uses a male insert O-ring inlet and female O-ring outlet. Replace O-rings and seals during service, and confirm the switch port and sight glass orientation match the vehicle’s original layout. This part is listed for Porsche 928 models from 1978-1991, so match the vehicle year and A/C configuration before ordering. Four Seasons 33360 is commonly searched as a Porsche 928 receiver drier, A/C filter drier, and HVAC accumulator replacement.

Quality Assurance

Four Seasons lists this part as meeting or exceeding OEM requirements. The steel construction, integrated desiccant, and OE-style fittings support consistent A/C service performance for Porsche 928 applications.