Four Seasons 33151 A/C Accumulator

Four Seasons 33151 A/C Accumulator Overview

The Four Seasons 33151 A/C accumulator is a complete aluminum replacement for the HVAC system on select Cadillac, Buick, and Oldsmobile vehicles. It is built to meet or exceed OEM specifications and is listed with switch port provisions for the correct A/C system configuration.

Compatible With 1990-1992 Cadillac Brougham, 1990 Buick Reatta, 1990 Buick Riviera, 1990 Cadillac Eldorado, 1990 Cadillac Seville, and 1990 Oldsmobile Toronado.

Key Features

• Brand: Four Seasons Accumulator line
• Part number: 33151
• Type: A/C accumulator, complete unit
• Material: aluminum construction
• Body diameter: 3.500 in. (88.900 mm)
• Body length: 9.000 in. (228.600 mm)
• Inlet and outlet: 3/4 in. male insert O-ring fittings
• Switch port included; no service port
• Meets or exceeds OEM requirements
• Cross-reference: Dorman - First Stop 33151

Detailed Description

The Four Seasons 33151 accumulator is part of the Four Seasons Accumulator product line, built for A/C systems that require a direct-fit accumulator with a switch port and 3/4-inch male insert O-ring connections. Its aluminum body and complete-unit style support proper refrigerant flow management in the HVAC circuit while matching the dimensional and fitting requirements of the original application. This part number 33151 is a direct replacement choice for 1990 Buick Reatta and Riviera, 1990 Cadillac Eldorado and Seville, 1990 Oldsmobile Toronado, and 1990-1992 Cadillac Brougham.

What It Is Used For

• Replacing a leaking or corroded A/C accumulator
• Restoring proper refrigerant storage and moisture separation in the HVAC system
• Addressing A/C performance loss caused by restricted or aged accumulator internals
• Correcting fitment issues on vehicles that require a switch-port accumulator
• Supporting repair of original equipment-style A/C plumbing connections

Installation Notes and Tips

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

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements for the specified applications. The part is engineered for direct replacement use in the listed Cadillac, Buick, and Oldsmobile models.