Audi a6 2.7 3.0 (02-05) Coolant Expansion Tank NEW Coolant Expansion Tank part# (8E0 121 403 D). Recently made by VAICO Fits: (2002-2004): A6 3.0 Fits: (2002-2005): A6 3.0 Q Fits: (2002-2005): A6 2.7 Q