This genuine BMW Vanos adjusting unit with Solenoid switch fits BMW E36 323is 328i 328is M3 96-98 - E39 528i 97-98 - Z3 2.8 97-98 - MZ3 98-00 with M52/S52 engine. When the vanos unit is on its way to failure it to emit a rattling noise additionally sometimes the solenoid will stick.