BMW Mass Air Flow Sensor - 13621432356

A failing mass air flow sensor can cause numerous check engine codes. The sensors measure the amount of air entering the engine via the intake.  Mass Air Flow Sensor Failure Symptoms Check engine light illuminated with OBD codes related to MAF sensor faults Engine has rough idle and/or stalls Short term fuel trim is rich at idle or lean under load Constantly runs rich or lean Replaces BMW PN  13621432356 Fitment: 320i 2001-2005 (13) Air Mass Meter 323Ci 2000 (7) Air Mass Meter 323i 1999-2000 (14) Air Mass Meter 323is 1999 (1) Air Mass Meter 325Ci 2001-2005 (24) Air Mass Meter 325i 2001-2005 (20) Air Mass Meter 325xi 2001-2005 (36) Air Mass Meter 328Ci 2000 (7) Air Mass Meter 328i 1999-2000 (14) Air Mass Meter 328is 1999 (4) Air Mass Meter 525i 2001-2003 (21) Air Mass Meter 528i 1998-2000 (15) Air Mass Meter Z3 1998-2002 (41) Air Mass Meter