Four Seasons 33191 A/C Accumulator

Four Seasons 33191 A/C Accumulator

The Four Seasons 33191 accumulator is a complete aluminum A/C accumulator built for OE-style service on select 1987 Buick Skyhawk, Oldsmobile Firenza, and Pontiac Sunbird applications. It meets or exceeds OEM requirements and uses a switch port with no service port for the specified HVAC setup.

Key Features

• Brand: Four Seasons Accumulator line
• Part number: 33191
• Complete unit construction in aluminum
• Female O-ring inlet and male insert O-ring outlet
• Body diameter: 3.500 in. / 88.900 mm
• Body length: 9.000 in. / 228.600 mm
• Switch port diameter: 0.250 in. / 6.350 mm
• Meets or exceeds OEM specifications
• Compatible with 1987 Buick Skyhawk, 1987 Oldsmobile Firenza, and 1987 Pontiac Sunbird

Product Details

Four Seasons 33191 is part of the Accumulator product line, a range focused on direct-fit HVAC service components for A/C systems that use an accumulator-style design. This unit is specified with a 3/4 in. inlet and outlet, female O-ring inlet fitting, male insert O-ring outlet fitting, and a switch port, making it a precise replacement for the listed vehicles. The aluminum construction supports corrosion resistance and consistent fitment in the A/C plumbing layout.

This part cross-references Monroe Shocks & Struts 172489 for the same application.

Fits 1987 Buick Skyhawk, N/A. Fits 1987 Oldsmobile Firenza, N/A. Fits 1987 Pontiac Sunbird, N/A.

Common A/C Issues This Part Addresses

• Restricted refrigerant flow through a worn accumulator
• Moisture control problems in the A/C system
• Damaged or leaking O-ring connections at the inlet or outlet
• Improper switch-port configuration on the existing unit
• Fitment issues during A/C system repair or restoration

Installation Notes

Verify the inlet and outlet fitting style, body dimensions, and switch-port configuration before installation. Replace the O-rings with the correct green O-ring seals specified for this application, and confirm the A/C system is evacuated, leak-checked, and charged to the vehicle specification after service. Mounting hardware is not included.

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements for the specified application. Confirm vehicle fitment by year, make, model, and HVAC connection style before ordering.