October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Identification

Fig 1: Locating Engine ID Code (3.7L AEW & 4.2L ABZ)

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Fig 2: Locating Engine ID (4.2L AKB, AUX & AYS)

Courtesy of AUDI OF AMERICA, INC.