2019 Audi A6 Quattro w/ R134a;. Part Type: A/C Expansion Valve. Block Type Expansion Valve w/o Solenoid. 2020 Audi A6 Quattro w/ R134a;. Expansion Valve. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
