Genuine borgwarner K03 turbocharger for 2006-8 tfsi 2.0L audi A4/A5
Various upgrade levels available, all a direct bolt-on turbo withall housings bored out for larger impellers:
Stage1 300hp...41.6 mm
Stage2 340hp...44.3 mm
Stage3 360hp...45.1 mm
Stage4 400hp...46.4 mm billet wheel.
The upgraded turbos will work on an otherwise stock car but in order to fully exploit the full potential of these turbo upgrades, ecu tuning and HPFP upgrade are needed.