Anybody Know the Part Number of the S4 Sport Diff ? And the Control Module?

[S4'ed]

Anybody Know the Part Number of the S4 Sport Diff ? And the Control Module?

[MrFunk]

I just looked it up for a 2012 - Genuine Audi Parts - http://genuineaudiparts.com/partloca...?siteid=214407

Auto with TQ vectoring
Part Number: 0BF500043Q
$4,535.30

Manual with TQ vectoring
Part Number: 0BF500043S
$4,947.60

(surprised it's more for the manual trans)

http://genuineaudiparts.com/parts/20...iagram=F201090

[GRUMPY-S4]

Are you trying to source one for your car? Its priceyyyyy

[S4'ed]

I am considering to do a retrofit.....I found a used (9000miles) sport diff from an RS5 for $399.....the control module is $199......

[scottycs]

wow, good luck. I would just sell and find the right car already with the diff.

[S4'ed]

wow, good luck. I would just sell and find the right car already with the diff.

I am not afraid of a little wrenching.......

[S4'ed]

Nevermind..the RS5 Sport Diff (S-Tronic) is a 2.944 ratio.....the S4 diff for a manual trans is 3.68....It does look like it would fit though...a shame...

RS5 S-Tronic.....0BF 500 044.....2.944
S4 S-Tronic......0BF 500 043Q.....3.88
S4 Manual......0BF 500 043S......3.68

[lowjonathan]

Nevermind..the RS5 Sport Diff (S-Tronic) is a 2.944 ratio.....the S4 diff for a manual trans is 3.68....It does look like it would fit though...a shame...

RS5 S-Tronic.....0BF 500 044.....2.944
S4 S-Tronic......0BF 500 043Q.....3.88
S4 Manual......0BF 500 043S......3.68

Nice, sub for more details...

[Senseless]

Wow expensive if mine fails. But, just like transmissions, there must be rebuilt or salvaged units available for much less than new.

[S4'ed]

Ebay : I found a used (9000miles) sport diff from an 2014 RS5 for $399.....the control module is $199......
You can get the V8 engine, with the S-Tronic transmission, and the engine ECU for $12,000....that would make an interesting retrofit into an S4, but using a manual transmission.......