Four Seasons 83229 A/C Accumulator

Four Seasons 83229 A/C Accumulator

The Four Seasons Accumulator 83229 is a complete aluminum A/C accumulator for select Chevrolet Silverado and GMC Sierra heavy-duty applications. It is built to meet or exceed OEM requirements and uses P-nut inlet and outlet fittings for the specified factory-style connection points.

Four Seasons Accumulator line components are built for direct replacement service in automotive HVAC systems, with application-specific fitment and OE-style dimensions. This unit is sized for the listed trucks and is intended for vehicles without a service port or switch port on the accumulator.

• Brand: Four Seasons
• Part number: 83229
• Type: A/C accumulator, complete unit
• Material: aluminum construction
• Body diameter: 3.500 in. / 88.900 mm
• Body length: 8.000 in. / 203.200 mm
• Inlet fitting type: P-nut fitting, 5/8 in.
• Outlet fitting type: P-nut fitting, 3/4 in.
• Meets or exceeds OEM specifications
• Without service port and without switch port

This A/C accumulator stores and filters refrigerant vapor on the low-pressure side of the system while helping protect the compressor from liquid refrigerant carryover. The Four Seasons 83229 is a direct-fit replacement for select 2004-2007 Chevrolet Silverado and GMC Sierra HD models, including 2004 Chevrolet Silverado 2500 HD and 3500, 2004 GMC Sierra 2500 HD and 3500, 2005-2006 Chevrolet Silverado 2500 HD and 3500, 2005-2006 GMC Sierra 2500 HD and 3500, and 2007 GMC Sierra 2500 HD Classic and Sierra 3500 Classic. This part cross-references Monroe Shocks & Struts 210236 for the same application.

Common Uses

• Restoring low-side refrigerant storage in a failing A/C system
• Replacing a leaking or corroded accumulator housing
• Addressing poor compressor protection caused by moisture or debris in the HVAC circuit
• Correcting fitment issues on trucks with the specified P-nut fitting layout
• Servicing Chevrolet Silverado HD and GMC Sierra HD air conditioning systems

Installation Notes

Verify the accumulator style, fitting orientation, and clocking before installation. This application is listed for vehicles without an ambulance package on the 2005-2007 HD trucks, and 2004 models are specified with the P-nut fitting clocked at 7:00. Mounting hardware is not included, and new O-rings or sealing washers should be matched to the system connection points during service.

Quality Assurance

Four Seasons lists this accumulator as meeting or exceeding OEM requirements for the specified application. Confirm vehicle year, make, model, and HVAC configuration against the fitment data before ordering. Compatible with 2004-2007 Chevrolet Silverado HD and GMC Sierra HD accumulator applications shown above, including 2007 GMC Sierra 2500 HD Classic and Sierra 3500 Classic.