Audi TT Platform 2009 Quick Reference page 85

Example:
HHJ
Code letters
76
Rear final drive 0AV
➡
A Rear final drive part number
➡
B Rear final drive code letters
➡
C Rear final drive production date
09
Day
Audi TT Quick Reference Specification Book • May 2009
08 05
Month Production year
(2005)