Four Seasons 33438 A/C Receiver Drier

Four Seasons 33438 A/C Receiver Drier

Four Seasons 33438 is a steel A/C receiver drier built for HVAC service on select BMW applications. It uses a male insert O-ring inlet and outlet, includes desiccant, and adds a sight glass, service port, and switch port for system service and monitoring.

Key Features

• Steel filter drier construction for A/C system durability
• Male insert O-ring inlet and outlet connections
• Desiccant included to help manage moisture in the refrigerant circuit
• Sight glass for visual refrigerant condition checks
• Service port and switch port included in the housing design
• Meets or exceeds OEM requirements
• New replacement part, not remanufactured

Product Details

This Four Seasons Filter Drier line part is engineered as an OE-style A/C receiver drier for BMW 318i, 325e, 325es, 325i, 325is, 325iX, and M3 applications listed below. The 33438 uses a steel body with a 3.000-inch diameter and 5.500-inch overall length, plus green O-rings and gasket/seals included for the connection points. It also features a fuse plug and a non-replaceable desiccant design for sealed-system service.

This part cross-references Bosch 16102 for the same application. Four Seasons 33438 is a direct-fit HVAC service component for BMW E30-era A/C systems where the receiver drier is specified with a black-terminal pressure switch exception noted in fitment.

What It Helps Address

• Moisture contamination in the A/C refrigerant circuit
• Reduced cooling performance caused by a saturated receiver drier
• Service issues related to aging BMW A/C filter drier assemblies
• Visual inspection needs through the integrated sight glass
• Pressure switch service access through the included switch port

Installation Notes

Verify the inlet and outlet O-ring style, body dimensions, and pressure switch configuration before installation. This part is listed for 1984-1993 BMW 318i, 325e, 325es, 325i, 325is, 325iX, and M3 applications, including notes such as w/o Black Terminal on Pressure Switch and Exc. Black Terminal on Pressure Switch where specified. Replace the receiver drier whenever the A/C system has been opened for service.

• Fits 1984 BMW 318i, N/A
• Fits 1984 BMW 325e, N/A
• Fits 1985 BMW 318i, N/A
• Fits 1985-1987 BMW 325e, N/A
• Fits 1986-1987 BMW 325es, N/A
• Fits 1987-1993 BMW 325i, N/A, w/o Black Terminal on Pressure Switch; Filter Drier
• Fits 1987-1991 BMW 325is, N/A, w/o Black Terminal on Pressure Switch; Filter Drier
• Fits 1988-1991 BMW 325iX, N/A, w/o Black Terminal on Pressure Switch; Filter Drier
• Fits 1990-1991 BMW M3, N/A, w/o Black Terminal on Pressure Switch; Filter Drier

Quality Assurance

Four Seasons 33438 is a new replacement filter drier that meets or exceeds OEM specifications for the listed BMW applications. The Four Seasons Filter Drier product line is built for HVAC service parts that match factory-style fitment and connection requirements.