BMW Mass Air Flow Sensor MAF Siemens VDO OEM 5WK96050Z / 13621432356 100% NEW Genuine Siemens / VDO Air Mass Sensor and Housing Siemens / VDO #: 5WK96050Z / BMW part # 13621432356 This is the 3 pin sensor - in case you have a 6 pin sensor email us.