Buy 1999 Audi A4 2.8L V6 M/T Quattro AIR CONDITIONING (A/C) Accumulator. AIR CONDITIONING (A/C) - OEM Audi Part # 4B0820192 (4B0-820-192)

A/C Accumulator. A/C Receiver Drier.

A/C AccumulatorA/C Receiver Drier

Fits A4, A6

1.8 & 2.8 liter, to VIN X199999. A4. From VIN W101656. Passat.
Air Conditioning Receiver Drier Assembly - Repair or Replace
The receiver drier in your A/C system contains a desiccant that protects its metal components as well as acting as a filter to prevent damage to the rest of your system. They also frequently include a pressure switch that signals your A/C compressor to turn on or off. Your 1999 Audi A4 should get a new receiver drier, or accumulator, any time your air conditioning is undergoing repairs.