Generations

Engine Codes

 * APB (1998-2001) - North American S4
 * ASJ/AZR (2000-2003) - RS4


 * AGB (1997-2001) - No post cat O2 sensors, Bosch MAF, original intake manifold
 * AZB (2000-2001) - ?

OEM equipment
Note: Manufacturer Year is inconsistent and sometimes arbitrary. See Notes below.

North American Production numbers
2002 is build date of 06/01 to 07/01