Four Seasons 33187 A/C Accumulator

Four Seasons 33187 A/C Accumulator

The Four Seasons 33187 A/C accumulator is a complete aluminum replacement built for select GM rear-wheel-drive applications. It features a 3.500-inch body diameter, 9.000-inch body length, female O-ring inlet, male insert O-ring outlet, and a switch port for the A/C pressure switch.

Compatible with Buick LeSabre, Chevrolet Caprice, Pontiac Safari, Pontiac Parisienne, Buick Regal, Chevrolet Impala, Oldsmobile Custom Cruiser, Oldsmobile Delta 88, Pontiac 6000, and Oldsmobile 98 applications listed below, this Four Seasons accumulator meets or exceeds OEM requirements and uses green O-ring sealing points for service-ready installation.

Key Features

• Four Seasons accumulator, part number 33187
• Aluminum complete unit construction
• 3.500-inch body diameter and 9.000-inch body length
• Female O-ring inlet and male insert O-ring outlet
• Switch port included; no service port
• Meets or exceeds OEM specifications
• Uses Green O-Ring seals at the listed connections
• Cross-reference: Gates 21647

Product Details

The Four Seasons Accumulator line is built for A/C systems that require a direct-fit accumulator with the correct inlet and outlet style, switch-port provision, and aluminum housing dimensions. This 33187 unit is specified with a 3/4-inch inlet and outlet, 0.250-inch switch port diameter, and a complete-unit style for straightforward replacement in the original HVAC layout. For shoppers searching for a 1984-1990 Buick LeSabre A/C accumulator or a 1984-1990 Chevrolet Caprice accumulator, this part number is a direct match for the listed vehicles.

What It Helps Address

• Loss of A/C system moisture control after accumulator failure
• Incorrect refrigerant flow management in the accumulator section
• Leaking O-ring connections at the inlet or outlet
• Faulty switch-port related service issues on equipped vehicles
• Restoring proper HVAC operation on listed Buick, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes and Tips

Verify the inlet and outlet fitting style, body dimensions, and switch-port configuration before installation. Replace the specified O-rings during service and confirm the system is clean, evacuated, and charged to the vehicle manufacturer’s specifications. Mounting hardware is not included.

Fits 1984-1990 Buick LeSabre, accumulator; 1985 Buick Regal, accumulator; 1984-1985 Oldsmobile Custom Cruiser, accumulator; 1984-1985 Oldsmobile Delta 88, accumulator; 1984 Oldsmobile 98, accumulator; 1984-1990 Chevrolet Caprice, accumulator; 1985 Chevrolet Impala, accumulator; 1984-1986 Pontiac Parisienne, accumulator; 1987-1989 Pontiac Safari, accumulator; 1985 Pontiac 6000, accumulator, only compatible with automatic A/C equipped vehicles.

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements, with application-specific dimensions and fittings intended to match the original A/C system layout. Part number 33187 is also cross-referenced in the aftermarket under UAC RD6067C for the same application.