JM Turbo Compatible For 96-03 Audi A4 1.8t K04 VW Turbo Passat K03 Upgrade Turbocharger (Fits: A4) K04 TURBO CHARGER (bolt on turbo charger ) Bigger compressor wheel then OEM turbo Compressor wheel inducer diameter - 38.00 Compressor wheel exducer diameter - 48.00 GOOD FOR 300HP + Applications: - 96-03 ( 1996 1997 1998 1999 2000 2001 2002 2003 ) AUDI A4 1.8T - 98-03 ( 1998 1999 2000 2001 2002 2003) Volkswagen PASSAT 1.8T WILL BOLT ON TO STOCK MANIFOLD & DOWNPIPE , NO MODIFICATIONS NEEDED. INSTANT 20HP GAIN OVER STOCK. (the factory oil lines needs to be replaced with new factory oil lines during the installation of this turbocharger ) INSTALLATION: Installation manual is not included Professional installation is highly recommended