FITMENT - 1993-1995 for BMW 325i 2.5L,1994-1995 for BMW 325is 2.5L,1993-1995 for BMW 525i 2.5L,1993 for BMW 525iT 2.5L,1994-1995 for BMW 530i 3.0L,1995 for BMW M3 3.0L. 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..
