This part is listed by BMW as BMW part number 11361748745 (11 36 1 748 745) and is described as a VANOS mounting screw, also known as a "Fit Bolt". It was used on M52TU, M54, and M56 engines found in various BMW chassis including the E39 5 series, E46 3 series, first generation X5 3.0 liter (E53), first generation BMW X3 (E83), and E85 Z4 models.
This torx bolt is used on the M52tu and M54 camshaft and vanos. In the BMW catalog it's known simply as the "fit bolt". It's a proprietary bolt made specifically for one purpose. It's left-hand thread which is reverse of the usual threads and it's not unusual for this to be stretched or snapped when being removed.
Sold individually. There are two of these per engine / car, one for each cam shaft of the engine.
Note on E39 528i & Z3 2.8 liter - Only for cars with "tu" technical update engine, as found in 1999 and 2000 models, those with 2.8 liter M52tu engine.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
3 Series
E46 (99-05) > 323Ci
E46 (99-05) > 323i
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 328Ci
E46 (99-05) > 328i
E46 (99-05) > 330i
E46 (99-05) > 330xi
5 Series
E39 (97-03) > 525i
E39 (97-03) > 528i 99-00
E39 (97-03) > 530i
5 Series
E60 / E61 (04-10) > 525i M54 (2004-2005)
E60 / E61 (04-10) > 530i M54 (2004-2005)
X3 Series
E83 X3 (04-10) > X3 2.5i M54 (2004-2005)
E83 X3 (04-10) > X3 3.0i M54 (2004-2006)
X5 Series
E53 X5 (00-06) > X5 3.0i M54
Z Series
E36/7 / E36/8 Z3 (96-02) > Z3 2.5
E36/7 / E36/8 Z3 (96-02) > Z3 3.0
Z Series
E85 / E86 Z4 (03-08) > Z4 2.5i M54
E85 / E86 Z4 (03-08) > Z4 3.0i M54