Four Seasons 33704 A/C Receiver Drier

Four Seasons 33704 A/C Receiver Drier

Four Seasons 33704 is a steel A/C receiver drier built for HVAC systems that need reliable moisture control and refrigerant filtration. It is a new, OE-style replacement that meets or exceeds OEM requirements and is listed with Mercedes-Benz E-Class fitments, including E320, E430, E500, E55 AMG, E280, E300, and E420 applications.

Filter Drier Line Details

As part of the Four Seasons Filter Drier line, this receiver drier is engineered for service-focused HVAC repair. The steel body, desiccant media, and male insert O-ring connections support proper refrigerant flow while helping protect the system from moisture and debris. The Four Seasons 33704 also includes a switch port and pressure relief valve provision, with no service port and no sight glass.

• Steel receiver drier construction
• Desiccant included for moisture absorption
• Male insert O-ring inlet and outlet fittings
• 3/8 in. inlet and outlet diameter
• 7.000 in. overall depth and 3.000 in. body diameter
• Switch port included; service port not included
• Meets or exceeds OEM requirements
• New replacement part

Detailed Description

The Four Seasons 33704 receiver drier is designed for Mercedes-Benz HVAC systems that require a direct-fit filter drier with the correct inlet and outlet configuration. It uses a steel housing with non-replaceable desiccant to help remove moisture from the refrigerant circuit, while the included green O-rings and gasket/seal provisions support a proper seal during service. This part cross-references UAC RD4081C for the same application. For Mercedes-Benz E320, E430, and E55 AMG service work, Four Seasons 33704 provides the fitment and connection style needed for a clean replacement.

Common Problems This Part Addresses

• Moisture contamination in the A/C refrigerant circuit
• Restricted refrigerant flow caused by a worn or saturated drier
• Debris buildup in the HVAC system after component replacement
• Loss of cooling performance from an aging receiver drier
• Seal leakage at the receiver drier connection points

Installation Notes and Tips

• Verify the male insert O-ring inlet and outlet connections before installation.
• Replace O-rings and seals during service to support proper sealing.
• Inspect the surrounding A/C components for contamination before reassembly.
• Confirm the switch port and pressure relief valve configuration matches the vehicle setup.
• Use the listed Mercedes-Benz fitment data to confirm application before ordering.

Quality Assurance

Four Seasons manufactures HVAC service parts to OE-style specifications, and this receiver drier is listed as meeting or exceeding OEM requirements. It is a new part built for direct replacement use in supported Mercedes-Benz E-Class applications, including 1995-2002 Mercedes-Benz E300, 1996-2002 Mercedes-Benz E320, 1997-1999 Mercedes-Benz E420, 1997-1997 Mercedes-Benz E500, 1998-2002 Mercedes-Benz E430, 1998-2002 Mercedes-Benz E55 AMG, and 1999-1999 Mercedes-Benz E280 fitments.