Four Seasons 33022 A/C Accumulator

Four Seasons 33022 A/C Accumulator Overview

Four Seasons 33022 is a complete A/C accumulator for select GM applications, including 1998-1999 Buick LeSabre, Buick Park Avenue, Oldsmobile 88, Oldsmobile LSS, and Pontiac Bonneville. Built as an OE-style replacement, it is specified with aluminum construction, male insert O-ring inlet and outlet fittings, and no service port or switch port.

The Four Seasons Accumulator line focuses on direct-fit HVAC service parts for vehicles that use an accumulator in the air conditioning system. Part number 33022 follows the original-style layout and dimensions for a straightforward replacement on the listed applications.

• Part number: 33022
• Brand line: Four Seasons Accumulator
• Type: A/C accumulator, complete unit
• Material: aluminum
• Body diameter: 3.500 in. / 88.900 mm
• Body length: 8.000 in. / 203.200 mm
• Inlet fitting: male insert O-ring, M27x2.000 thread, 3/4 in. diameter
• Outlet fitting: male insert O-ring, 0.768 in. / 19.500 mm
• No service port and no switch port
• Meets or exceeds OEM requirements
• Direct interchange reference: Gates 21797

Detailed Product Description

This A/C accumulator stores and conditions refrigerant flow on the listed Buick, Oldsmobile, and Pontiac vehicles, helping maintain proper HVAC system operation. Four Seasons 33022 is built to match the original configuration with the correct inlet and outlet fitting style, aluminum body, and OE-matching dimensions for the 1998-1999 Buick LeSabre, Buick Park Avenue, Oldsmobile 88, Oldsmobile LSS, and Pontiac Bonneville.

Use this part when servicing an accumulator that matches the same complete-unit layout and fitting style. The Four Seasons 33022 part number is also a common cross-reference in the aftermarket for the same application.

Common Replacement Reasons

• Leaking accumulator housing or fittings
• Corrosion or damage to the aluminum body
• Restricted refrigerant flow through the accumulator
• Failed A/C service due to a worn or contaminated accumulator
• Replacement during HVAC system repair on 1998-1999 Buick LeSabre, Buick Park Avenue, Oldsmobile 88, Oldsmobile LSS, or Pontiac Bonneville

Installation Notes and Tips

Verify the inlet and outlet fitting style, thread size, and overall dimensions before installation. Replace the O-rings with the correct refrigerant-compatible seals during service, and confirm the system does not require a service port or switch port before ordering. Proper evacuation, leak checking, and recharge procedures should be followed after installation.

Quality Assurance

Four Seasons 33022 is listed as meeting or exceeding OEM requirements and is built as an OE-style replacement for the specified applications. Confirm vehicle fitment by year, make, model, and HVAC configuration before installation.