Audi A1

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Vehicle	Required adapters for the connections to A/C compressor	Adapters necessary for the connections to the reservoir or receiver/dryer	Miscellaneous
Audi A1 (8X_) from MY 2017	-- Compressor manufacturer "Denso", "Sanden" or "Delphi/Mahle" Low pressure side Refrigerant Circuits Adapter Set 1 - Adapter 12:VAS6338/12 connected with the A/C Service Station and the Refrigerant Circuits Adapter Set - Adapter 48:VAS6338/48 High pressure side Refrigerant Circuits Adapter Set 1 - Adapter 3:VAS6338/3 or Refrigerant Circuits Adapter Set 1 - Adapter 2:VAS6338/2 (depending on the version of the A/C compressor and its refrigerant line).	Different versions-- Version 1 (the receiver/dryer is integrated on the condenser): the adapter is not needed, the desiccant bag is removed from the receiver/dryer on the condenser and opening is closed again for flushing.-- Version 2 (receiver/dryer attached to the condenser): the adapter is not needed, the receiver/dryer remains installed (it will be replaced after flushing)	The expansion valve is removed and the Refrigerant Circuits Adapter Set 1 - Adapter 34:VAS6338/34 or Refrigerant Circuits Adapter Set 1 - Adapter 39:VAS6338/39 (see the note below) is installed (or the removed expansion valve is drilled for flushing and installed again). Refer to Cleaning The Refrigerant Circuit, Preliminary Work (Flushing With Refrigerant R1234YF) .

NOTE:

The receiver/dryer may be attached to or integrated in the condenser on the Audi A1 / S1, depending on the version of the condenser. A dryer cartridge is installed in the integrated receiver/dryer and can be replaced separately. An attached receiver/dryer (introduction TBD) must be replaced after the flushing. Refer to the Parts Information and REFRIGERANT CIRCUIT [For engine(s) CTUA, CAED, CREH, CEUC, CTGE, CREC, CYNB, CPNB]

There are different versions of the A/C unit (different heater core and sears different expansion valve etc.) depending on time period of production and from the VIN number on Audi A1 / S1. Refer to the Parts Information. Vehicles with the type keys "8X1" and "8XA" in the VIN have an expansion valve installed, where both refrigerant lines are attached at the top. This is where the Refrigerant Circuits Adapter Set 1 - Adapter 34:VAS6338/34 fits. For vehicles with the type key "8XF" and "8XK" in the VIN number an expansion valve is installed, on those where both refrigerant pipes are attached below, here the Refrigerant Circuits Adapter Set 1 - Adapter 39:VAS6338/39 fits.