Four Seasons 83731 A/C Accumulator

OE-Style A/C Accumulator for Audi

Restore proper air conditioning performance with the Four Seasons Accumulator 83731. This aluminum A/C accumulator is built as a complete unit with pad-mount inlet and outlet fittings, and it meets or exceeds OEM requirements for a direct-fit replacement on select Audi applications.

Four Seasons Accumulator line parts are built for HVAC service work where accurate fit, correct port style, and dependable system function matter. Part number 83731 is a practical choice for Audi R8, A6, A6 Quattro, S6, S8, A4, A4 Quattro, S4, and S5 models that use this accumulator configuration.

Key Features

• Four Seasons part number 83731
• A/C accumulator, complete unit style
• Aluminum body construction
• Pad-mount inlet and outlet fittings
• 7/8 inlet and 7/8 outlet fitting diameter
• 2.750 in. body diameter and 8.000 in. body length
• No service port and no switch port
• Meets or exceeds OEM specifications
• Mounting hardware not included

Detailed Description

The accumulator is a key HVAC component in the A/C system, helping manage refrigerant flow and moisture control on the low-pressure side. This Four Seasons 83731 accumulator is engineered as an OE-style replacement with the correct pad-mount design, aluminum housing, and factory-style dimensions for select Audi platforms. It is listed for 2004-2015 Audi applications, including Audi R8, A6, A6 Quattro, S6, S8, A4, A4 Quattro, S4, and S5 models. This part cross-references UAC RD10975C for the same application.

Common Repair Uses

• Replaces a leaking or corroded A/C accumulator
• Addresses poor cooling caused by restricted refrigerant flow
• Helps correct moisture contamination in the HVAC system
• Supports repair after compressor or line service
• Restores proper accumulator fit on Audi A/C systems

Installation Notes and Tips

• Verify the vehicle uses a pad-mount accumulator with 7/8 fittings before ordering.
• Confirm fitment by model year and VIN notes, especially for 2007 Audi A4 and A4 Quattro from VIN No. 8E7029001.
• Replace O-rings and evacuate/recharge the system according to factory service procedures.
• Inspect the compressor, condenser, and lines for contamination before installing the new accumulator.
• Mounting hardware is not included.

Quality Assurance

Four Seasons 83731 is manufactured to meet or exceed OEM requirements for the listed Audi applications. It is a direct replacement accumulator for select Audi HVAC systems and is built to match the specified fitment and port configuration.