Borg Warner K03/K04 Hybrid Turbo for Mk3/B4 TDI (1996-1999)

What It Is
A hybrid upgrade turbo built from brand new K03 and K04 components, designed as a direct bolt-in replacement for the factory Garrett GT-15 and Borg Warner (KKK) K-03 wastegated turbos found on 1996-1999 Jettas and 1996-1997 Passats.

Performance Potential

• Reliably supports up to 165 hp when paired with the correct nozzles and chip tuning
• KermaTDI has seen gains of roughly 15 hp from the turbo upgrade alone, before adding nozzles or tuning

Build Quality and Warranty
This turbo is covered by a 12 month, 12,000 mile manufacturer warranty against manufacturing defects. KermaTDI sources only genuine, name-brand turbo components rather than the lower-cost knockoff builds sometimes found elsewhere.

Important Compatibility Notes

• This turbo does not fit the Canadian AAZ engine. A separate upgrade path exists for AAZ turbos; contact KermaTDI directly for details
• KermaTDI's stainless oil supply line does not fit the 1996 Passat specifically

Fitment
1996-1999 Mk3 Jetta TDI with the AHU engine, and 1996-1997 B4 Passat TDI with the AHU or 1Z engine.

Common Questions

Will this fit my Canadian AAZ-engine car?
No. This turbo doesn't fit the AAZ engine. A separate upgrade path exists for that engine, so contact KermaTDI directly for details.

Do I need nozzles and tuning to see a benefit?
You'll see a gain from the turbo alone, around 15 hp, but reaching the full 165 hp potential requires the correct nozzles and chip tuning alongside it.

Is this a direct bolt-in replacement?
Yes, it's designed to bolt directly in place of the factory Garrett GT-15 or Borg Warner K-03 turbo.

Does the oil supply line fit my 1996 Passat?
No, KermaTDI notes their stainless oil supply line specifically does not fit the 1996 Passat.