Four Seasons 83211 A/C Accumulator

Four Seasons 83211 A/C Accumulator

The Four Seasons Accumulator 83211 is a complete aluminum A/C accumulator for select Chevrolet Silverado and GMC Sierra heavy-duty trucks. It is built to meet or exceed OEM specifications and uses P-nut inlet and outlet fittings for the correct factory-style connection.

Key Features

• Four Seasons Accumulator line replacement for automotive HVAC service
• Aluminum body with a complete-unit style construction
• P-nut inlet and outlet fittings for proper A/C line attachment
• Switch port included; no service port on the unit
• Meets or exceeds OEM requirements
• Direct-fit application for 2002-2004 Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500

Product Details

This A/C accumulator is used in the HVAC system to manage refrigerant flow and help protect the compressor by separating and storing excess refrigerant and moisture before it cycles through the system. The Four Seasons 83211 is specified with a 3.500-inch body diameter, 8.000-inch body length, aluminum construction, 3/4-inch inlet and outlet fitting diameter, and M8x1.500 outlet thread size. It also includes the correct switch port configuration for applications that use a pressure switch connection. This part cross-references Monroe Shocks & Struts 210238 for the same application.

Vehicle Fitment

• Fits 2004 Chevrolet Silverado 2500 HD, N/A, P-nut fitting clocked at 2:00; accumulator
• Fits 2004 Chevrolet Silverado 3500, N/A, P-nut fitting clocked at 2:00; accumulator
• Fits 2004 GMC Sierra 2500 HD, N/A, P-nut fitting clocked at 2:00; accumulator
• Fits 2004 GMC Sierra 3500, N/A, P-nut fitting clocked at 2:00; accumulator
• Fits 2003 Chevrolet Silverado 2500 HD, N/A, w/o Ambulance Pkg.; accumulator
• Fits 2003 Chevrolet Silverado 3500, N/A, w/o Ambulance Pkg.; accumulator
• Fits 2003 GMC Sierra 2500 HD, N/A, w/o Ambulance Pkg.; accumulator
• Fits 2003 GMC Sierra 3500, N/A, w/o Ambulance Pkg.; accumulator
• Fits 2002 Chevrolet Silverado 2500 HD, N/A, accumulator
• Fits 2002 Chevrolet Silverado 3500, N/A, accumulator
• Fits 2002 GMC Sierra 2500 HD, N/A, accumulator
• Fits 2002 GMC Sierra 3500, N/A, accumulator

Installation Notes

Verify the P-nut fitting orientation, switch port location, and line clocking before installation. Replace the O-rings with the correct A/C sealing components during service, and confirm all connections are clean and properly seated before evacuating and recharging the system. Mounting hardware is not included.

Quality Assurance

Four Seasons designs this accumulator to meet or exceed OEM specifications for fit and function in the listed Chevrolet Silverado and GMC Sierra applications. The aluminum construction and factory-style connection points support accurate HVAC service on the specified trucks.