FITMENT - 1997-1999 for Audi A4 1.8L,1997-2000 for Audi A4 Quattro 1.8L,1995-1999 for Volkswagen for Cabrio 2.0L,1993-1998 for Volkswagen Golf 2.0L,1993-1998 for Volkswagen for Jetta 2.0L,1998-1999 for Volkswagen for Passat 1.8L,1995-1996 for Volkswagen for Passat 2.0L. EASY to INSTALL and CLEAN - Disconnect the negative side of the battery, then loosen a couple band clamps and disconnect the harness. Pull out your old unit and re-insert new one, tighten band clamps, re-connect harness and negative battery terminal. HOW to WORK - Mass Air Flow Meter AFM Sensor measures the volume and density of air entering the engine, providing highly accurate Air Flow readings to the ECU over a wide range of ambient temperatures..
