Four Seasons 33218 A/C Accumulator

Four Seasons 33218 A/C Accumulator Overview

The Four Seasons 33218 A/C accumulator is a complete aluminum replacement for the HVAC system on select Chevrolet Astro and GMC Safari vans. It is built with a service port and switch port, and it meets or exceeds OEM specifications for direct-fit service on the listed applications.

Four Seasons Accumulator parts are built for accurate fitment and dependable A/C system service. This unit uses female O-ring inlet and male insert O-ring outlet connections, with the correct M27x2.000 thread size and 3/4-inch fittings for the specified vehicles.

Key Features

• Part number 33218 from Four Seasons
• Complete unit aluminum A/C accumulator
• Service port and switch port included in the housing design
• Female O-ring inlet fitting with M27x2.000 thread size
• Male insert O-ring outlet fitting with M27x2.000 thread size
• Meets or exceeds OEM requirements
• Direct replacement for select Chevrolet Astro and GMC Safari applications

Detailed Description

The Four Seasons 33218 accumulator is an OE-style HVAC component used in the A/C system to manage refrigerant flow and help protect the compressor from liquid refrigerant return. Its aluminum construction, 3.500-inch body diameter, and 8.000-inch body length support a factory-style fit in the designated Chevrolet Astro and GMC Safari models. This part cross-references Gates 21756 for the same application.

Compatible With 1996-2005 Chevrolet Astro, accumulator position, and 1996-2005 GMC Safari, accumulator position. For buyers searching for a Chevrolet Astro A/C accumulator replacement or a GMC Safari accumulator with service port, Four Seasons 33218 provides the specified connection style and OE-matching dimensions.

Common Problems This Part Can Address

• Refrigerant contamination from a worn or damaged accumulator
• Improper A/C system operation caused by failed internal desiccant function
• Leaks at the accumulator inlet or outlet O-ring connections
• Service issues related to a damaged switch port or service port
• Poor compressor protection from an aging HVAC accumulator

Installation Notes and Tips

Verify the inlet and outlet fitting style, thread size, and body dimensions before installation. Replace the O-rings with the correct green O-rings specified for this unit, and inspect the surrounding A/C lines and seals for wear before reassembly. Mounting hardware is not included, so reuse or source the correct hardware as needed for the vehicle.

After installation, evacuate and recharge the system according to factory service procedures and confirm proper operation of the service port and switch port connections.

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM specifications, making it a direct-fit replacement for the confirmed Chevrolet Astro and GMC Safari applications. The part number 33218 is also referenced in aftermarket catalogs for the same vehicle coverage.