Capacities, AUDI A6 (4B_) From My 1998 And AUDI ALLROAD (4B_) From My 2005

Restrictors with a modified hole have been installed at the factory since November 1997 (yellow colored). The capacity was increased by 50 g for vehicles in which a yellow colored restrictor was installed.

In order to distinguish between the two restrictor versions, the one with the smaller hole (1.54 mm) is yellow colored. The restrictor with the larger hole (1.83 mm) is not colored.

If a vehicle is equipped with a colored restrictor as replacement for a non-colored restrictor, add 50 g more refrigerant than specified in the table. In addition, the capacity specified on the label in the vehicle is to be checked and amended if necessary, or the existing label is to be replaced with one indicating the correct capacity (affix over old label).

The Audi A6 are equipped with different A/C compressors depending on engine and production period.

Production was gradually switched in August/September 1998 from air conditioner unit version 1 to air conditioner unit version 2. A reduction in capacity was achieved as the evaporator was also modified together with the air conditioner unit.

The two air conditioner unit versions can be identified on the basis of certain characteristics described in the vehicle-specific repair information. Refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Description and Operation .

Beginning the production year 2006, the name of the Zexel A/C compressor was changed from Zexel to Valeo.

Condensers with A/C pressure switch -F129- or High Pressure Sensor -G65- are supplied for production as part number XXXXXX 401 X. As a replacement part, this condenser is supplied without A/C pressure switch -F129- or high pressure sensor -G65- as part number XXXXXX 403 X.

From 10.98 to 12.98, vehicles with 6-cyinder. diesel engine (initially about 10, 000) were equipped with condensers of a different design. The capacity is different for vehicles with these condensers. The condensers can be identified on the basis of certain characteristics and the part number, refer to DETERMINING DIMENSIONS OF FLAT PIPES FROM CONDENSER .

The Audi A6 are equipped with different A/C compressors depending on engine and production period.

On condenser replacement, observe part number index (different flat pipe versions, flat pipe dimensions 16 x 1.7 mm, 18 mm x 1.7 mm or 20 mm x 3 mm) and the different capacities involved. If a condenser with a different part number index is installed, the capacity specified on the label must be checked and amended if necessary or a label indicating the modified capacity must be affixed over the existing label. The part number can be found on a sticker affixed on the underside of the condenser.

As of 04.99, production was gradually switched from condensers with flat pipe dimensions 20 mm x 3 mm to condensers with flat pipe dimensions 18 mm x 1.7 mm or 16 mm x 1.7 mm. The change in production took place gradually during the course of 1999 depending on the engine and existing supplies of the different versions.

For vehicles as of 04.99 equipped with 6-cylinder diesel engine, a condenser with index D, G, R or K may be installed. Pay attention to the different capacities. Refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Description and Operation .

The 8-cylinder Audi A6 has a Denso A/C compressor.

Production was gradually switched in August/September 1998 from air conditioner unit version 1 to air conditioner unit version 2. Vehicles with 8-cylinder engine are only equipped with air conditioner unit as of version 2.

The different air conditioner unit versions can be identified on the basis of certain characteristics described in the repair information. Refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Description and Operation (vehicle-specific repair information).

For vehicles with 8-cylinder engines, different condensers were installed. Exclusive use was made for USA vehicles of condensers with part no. 4B3 260 401 (403) C, D, E.

In March 1999, production was gradually switched from condensers with part no. 4B3 260 401 (403) B to condensers with part no. 4B3 260 401 (403) C.

If the condenser installed is replaced by a condenser with a different part number, the capacity specified on the label must be amended and, if necessary, the label indicating the modified capacity must be affixed over the existing label. The part number can be found on a sticker attached to the bottom of the condenser. Refer to [For engine(s) BPY, CETA, CCTA, CDMA, CEPB] Description and Operation .