Engine Number/Engine Specifications: Notes

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Engine Number

The engine number ("engine code" and "serial number") are located at the front of the engine/transmission joint -arrow-.

Fig 1: Engine Code And Serial Number Location
Courtesy of AUDI OF AMERICA, LLC
There is also a label located on the upper timing chain cover with the "engine code" and "serial number".
The engine code is also included on the vehicle data labels.