Four Seasons 83221 A/C Accumulator

Four Seasons 83221 A/C Accumulator

The Four Seasons 83221 accumulator is a complete aluminum replacement for rear A/C systems that use a P-nut inlet and outlet fitting layout. Built to meet or exceed OEM requirements, it is a direct-fit service part for select Cadillac Escalade, Chevrolet Suburban and Tahoe, and GMC Yukon applications with rear air conditioning.

Four Seasons Accumulator line parts are built for HVAC service where correct fit, sealing surfaces, and switch-port configuration matter. This unit includes a switch port and uses OE-style connection points to support accurate replacement on the listed vehicles.

• Aluminum accumulator body for HVAC service
• Complete unit style with switch port
• P-nut inlet and outlet fittings
• 3/4-inch inlet and outlet fitting diameter
• Meets or exceeds OEM specifications
• OE-style dimensions: 3.500 in. body diameter and 9.000 in. body length
• Switch port diameter: 0.472 in. / 12.000 mm
• Outlet thread size: M8x1.500

This A/C accumulator helps maintain proper refrigerant flow and moisture control in the air conditioning system. It is a direct replacement for vehicles that require an accumulator in the rear A/C circuit, including 2003-2006 Cadillac Escalade, 2003-2006 Cadillac Escalade ESV, 2003-2006 Cadillac Escalade EXT, 2003-2006 Chevrolet Suburban 1500, 2003-2006 Chevrolet Suburban 2500, 2003-2006 Chevrolet Tahoe, 2003-2006 GMC Yukon, 2003-2006 GMC Yukon XL 1500, and 2003-2006 GMC Yukon XL 2500.

This part cross-references UAC RD10079C for the same application.

• Restores proper accumulator function in rear A/C systems
• Addresses refrigerant moisture management concerns
• Replaces a leaking or damaged accumulator housing
• Supports repair of incorrect or worn fitting connections
• Helps resolve A/C performance issues tied to accumulator failure

Installation should follow OEM service procedures for the listed Cadillac, Chevrolet, and GMC applications. Verify the switch-port configuration, inlet and outlet fitting style, and dimensions before installation. Mounting hardware is not included, so reuse or source the correct hardware as needed. Replace O-rings and sealing washers during service to help ensure a proper seal.

Four Seasons 83221 is engineered as an OEM-style HVAC replacement and meets or exceeds OEM specifications for the listed applications. Confirm vehicle fitment by year, make, model, and rear A/C configuration before ordering.

• Fits 2003-2006 Cadillac Escalade, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 Cadillac Escalade ESV, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 Cadillac Escalade EXT, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 Chevrolet Suburban 1500, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 Chevrolet Suburban 2500, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 Chevrolet Tahoe, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 GMC Yukon, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 GMC Yukon XL 1500, N/A, w/ Rear AC; Accumulator
• Fits 2003-2006 GMC Yukon XL 2500, N/A, w/ Rear AC; Accumulator