OE AAN/ADU/ABY Coil question

[UrS4boy]

On 93 S4 (AAN) my coils were Audi PN 034 905 101. I am not sure about the BERU number.

I have been told that the S2 (ABY) coil was/is an Audi 034 905 105 which is a BERU
0 040 100 009.

There is also a BERU 0 040 100 043 that looks identical to the 034 905 105 (which looks the same as the 034 905 101).

Can anybody help me sort this out? Are there differences or are they all the same?

(I'm asking for a friend)

Dave F.

[valjo]

aby, adu and aan have the same coils. i have in mine ABY coils, that were bought for audi s6, but they work just fine

[UrS4boy]

aby, adu and aan have the same coils. i have in mine ABY coils, that were bought for audi s6, but they work just fine

That's what I thought. But these different BERU coils exist and have been used in an AAN situation. I am wondering if there was a BERU part number change or just what. And what the 034 905 105 Audi PN coils were on.

Dave F.