I was wondering if anyone can let me know the list of bulb sizes for the d2 xenon headlights and rear b5 s4 tailights?

 

D2S is the bulb size for the xenons. There's no other identifier for them besides color temperature. As for the tail lights, why not just pull the burned out one out of the housing and take it into autozone with you? I don't remember the part #'s off the top of my head but my avant uses both one and two ground post bulbs