Four Seasons 33104 A/C Accumulator

Four Seasons 33104 A/C Accumulator

The Four Seasons 33104 accumulator is a complete aluminum A/C accumulator built for select GM applications that use dual O-ring connections and a switch port. It is a direct-fit HVAC service part for restoring proper refrigerant control in systems found on Buick LeSabre, Park Avenue, Oldsmobile 88, 98, LSS, Regency, and Pontiac Bonneville models.

Four Seasons Accumulator parts are built to meet or exceed OEM requirements, and this unit follows the original-style layout for a clean replacement on the vehicle’s air conditioning system. If you are replacing a leaking or restricted A/C accumulator on a 1994-1998 Buick, Oldsmobile, or Pontiac application, Four Seasons 33104 provides the correct connection style and housing dimensions for the listed vehicles.

Key Features

• Brand: Four Seasons
• Part number: 33104
• Type: A/C accumulator
• Style: complete unit
• Material: aluminum
• Dual O-ring inlet and outlet fittings
• Switch port included; switch service port not included
• Meets or exceeds OEM specifications
• Compatible with select 1994-1998 Buick, Oldsmobile, and Pontiac models

Detailed Description

This Four Seasons 33104 accumulator is used in the A/C system to manage refrigerant flow and help maintain proper system operation after the refrigerant leaves the evaporator. It features a 3.500-inch body diameter, 8.000-inch body length, M27x2.000 inlet and outlet thread sizes, and dual O-ring fittings for the listed applications. The aluminum construction supports OE-style replacement fitment, while the switch port configuration matches vehicles that use a pressure switch connection at the accumulator.

Compatible With: 1994-1997 Buick LeSabre, 1994-1997 Buick Park Avenue, 1994-1997 Oldsmobile 88, 1994-1996 Oldsmobile 98, 1996-1997 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, and 1994-1997 Pontiac Bonneville. This part cross-references Monroe Shocks & Struts (e.g., 171685) for the same application.

What It Helps Address

• Leaking or damaged A/C accumulator housing
• Incorrect refrigerant routing in the accumulator section of the HVAC system
• Failed accumulator on vehicles with a switch-port style connection
• Restoration work on aging Buick, Oldsmobile, or Pontiac air conditioning systems
• Replacement needs after contamination or internal restriction in the A/C circuit

Installation Notes and Tips

Verify the inlet and outlet thread sizes, dual O-ring connection style, and switch-port configuration before installation. Replace the O-rings with the correct refrigerant-compatible seals during service, and inspect the surrounding A/C lines for wear, corrosion, or contamination before reassembly. Because mounting hardware is not included, reuse or source the required hardware separately if needed.

For fitment-specific searches, this part is commonly referenced for 1994-1998 Buick, Oldsmobile, and Pontiac A/C accumulator replacement service, including Buick LeSabre, Oldsmobile 98, and Pontiac Bonneville applications.

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements. The OE-style aluminum construction and application-specific connection design support accurate replacement on the listed vehicles, including Four Seasons 33104 service for GM HVAC repair.