Four Seasons 83291 A/C Accumulator

Four Seasons 83291 A/C Accumulator Overview

The Four Seasons Accumulator 83291 is a complete aluminum A/C accumulator built for HVAC systems that use a P-nut inlet and outlet fitting layout. It meets or exceeds OEM requirements and includes a switch port, making it a direct replacement choice for select Chevrolet Silverado 2500 HD, Silverado 3500, GMC Sierra 2500 HD, and Sierra 3500 applications with the Ambulance Package.

Four Seasons Accumulator line components are built for service-focused HVAC repairs where correct fit, proper sealing, and reliable refrigerant management matter. This unit is sized at 3.500 inches in body diameter and 9.500 inches in body length, with 88.900 mm and 241.300 mm metric equivalents for accurate parts matching.

Key Features

• Part number 83291 from Four Seasons
• Accumulator type A/C component for HVAC service
• Aluminum body construction
• Complete unit style with switch port
• Inlet and outlet use P-nut fittings
• Body diameter: 3.500 in. / 88.900 mm
• Body length: 9.500 in. / 241.300 mm
• Meets or exceeds OEM specifications
• Includes sealing components with Green O-Ring and Slimline Washer references

Detailed Description

Four Seasons 83291 is an A/C accumulator used in the refrigerant circuit to help manage moisture and liquid refrigerant before it reaches sensitive HVAC components. The aluminum construction supports corrosion resistance in underhood environments, while the complete-unit design and switch port help match the original system layout on the vehicle. This part cross-references UAC RD10123C for the same application.

Fitment includes 2003-2007 Chevrolet Silverado 2500 HD, 2007 Chevrolet Silverado 2500 HD Classic, 2007 Chevrolet Silverado 3500 Classic, 2007 Chevrolet Silverado 3500 HD, 2003-2007 GMC Sierra 2500 HD, 2007 GMC Sierra 2500 HD Classic, 2007 GMC Sierra 3500 Classic, 2007 GMC Sierra 3500 HD, 2003-2006 Chevrolet Silverado 3500, and 2003-2006 GMC Sierra 3500, all noted for Ambulance Package configurations where applicable. For Chevrolet Silverado and GMC Sierra HVAC repair work, part number 83291 provides a direct replacement format for the specified accumulator application.

What It Helps Address

• Loss of A/C cooling performance caused by a restricted or failing accumulator
• Moisture control issues in the refrigerant circuit
• Incorrect fitment from mismatched inlet, outlet, or switch-port configuration
• HVAC service needs on Ambulance Package Silverado and Sierra models
• Leak concerns related to worn sealing surfaces or aged accumulator housing

Installation Notes and Tips

• Verify the vehicle uses the listed accumulator configuration before ordering.
• Confirm P-nut inlet and outlet fitting style, along with switch-port presence, against the original part.
• Replace the accumulator during A/C system service when contamination or moisture intrusion is present.
• Inspect mating surfaces and refrigerant lines before installation.
• Use the correct O-rings and washers for the application and follow OEM service procedures.

Quality Assurance

Four Seasons 83291 meets or exceeds OEM specifications for the listed application. The part is built as a complete aluminum accumulator for accurate replacement in supported Chevrolet Silverado and GMC Sierra HVAC systems.