Found under intake manifold on 2.7T, near the radiator on 1.8T. Common source of coolant leak. Electric water pump.
On the 2.7T engine, the intake manifold is removed during installation of this pump, so it is recommended to replace the intake manifold gaskets during the job.

Add 2.7T Intake Manifold gasket set with the drop down menu below.

VW/Audi part number: 078 965 561
Bosch part number: 0 392 020 039