K04 UPGRADE TURBO CHARGER FOR 96-06 AUDI A4 VW PASSAT 1.8T Factory K03 K04 UPGRADE TURBO FOR 1.8T K03 Factory Turbo, Bolt On Replacement for Factory K03 Turbo For 1996 - 2003 AUDI A4 1.8T TURBO , 2004 - 2006 AUDI A4 WITH AMB 1.8T TURBO ENGINE , 1996 - 2006 VW PASSAT 1.8T TURBO This turbo's Exhaust housing is the same as K03, so bolt on to factory Manifold and Downpipe. Compressor is K04 specification, bigger, more Power 2" Compressor Air inlet, 2 1/8" Compressor Air Outlet, Standard K03 Turbine Housing Flange, 3-bolt Exhaust Outlet, Oil and Water Cooled, 8 PSI Working Pressure 41.7 mm Compressor Minor, 56mm Compressor Major, 41.8mm Turbine Minor, 50mm Turbine Major