This page presents a compendium of the turbochargers that I have installed in my Audi S4 over the years.
Borg-Warner K03 Turbocharger – OEM for the Audi B5 S4
![Borg-Warner K03 turbocharger](https://myaudis4.com/wp-content/uploads/rebuilt_k03-2.jpg)
Borg-Warner RS4 K04 Turbochargers – OEM for the Audi B5 RS4
![Image of BorgWarner RS4 K04 Turbochargers](https://myaudis4.com/wp-content/uploads/borgwarner-rs4-k04.jpg)
TiAL Sport R605 Turbochargers
![TiAL Sport R605 Turbocharger version one](https://myaudis4.com/tial/images/turbomarkup2.jpg)
FrankenTurbo F4H-BT
![FrankenTurbo F4H beside TiAL R605](https://myaudis4.com/wp-content/uploads/2012/09/f4h-vs-601-a.jpg)