Finding Engine Letter Codes

The code characters which identify an engine can be easily viewed in the engine compartment. The code, GX for example, is given at the beginning of the engine number which is stamped on a flat area of the top of the engine block, just below the lower edge of the cylinder head and located approximately between the No. 3 and No. 4 cylinders. The location of the engine number stamp is shown in Fig. 1-4. Table a lists engine codes, application information, and major specifications.

Fig. 1-4.

Location of stamped engine number and identifying code.

Table a. GTI, Golf, and Jetta Engines