FITMENT - 2000-2003 for Volvo S40 1.9L,1999 for Volvo S40 L,2000-2004 for Volvo V40 1.9L,1999 for Volvo V40 L. 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..
