Audi Cars 1999-05

Engine Identification

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Fig. Engine identification number location-2.8L VR6 (AAA) engine



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Fig. Engine identification number location-gasoline engines



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Fig. The engine family can also be determined from the vehicles under hood emissions label



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Fig. A vacuum hose routing diagram can be located under the vehicles hood

The engine identification numbers are located as follows:



1.8L turbo engines: On the left side of the block above the oil filter
 
2.0L engines: Stamped into the front of the block near the crankcase breather or upper coolant hose
 
VR6 engine: Above the crankshaft pulley, at the top of the cylinder block
 
V6 engines: The flat surface of the block in front of the right cylinder head
 

The first two (or in the case of later engines, three) characters are the engine code and will be the most useful description of the engine when locating specifications or ordering parts.

Although AUDI and Volkswagen engines share many components, the code indicates differences in engine management systems, emissions specifications, compression ratios, power ratings and other details. The engine code also appears in large type on the model identification label in the luggage compartment.

For additional details, refer to the engine identification charts in this section.


NOTE
As with the different vehicle platforms, sometimes headings and/or procedures in this manual are broken down by engine code. Make sure that you identify the engine in your vehicle, so you can refer to the appropriate procedure.



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Fig.



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Fig. Engine Identification number location-4 cylinder Engines



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Fig. Engine Identification number location-6 cylinder Engines

 
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