This part is listed by BMW as BMW part number 11287838797 (11 28 7 838 797) and is described as OEM Drive Belt Kit for BMW E60 525i/530i and E83 X3 2.5i/3.0i with the M54 engine.
Kit includes -
11287636379, main drive belt (6PK1540)
11287838797, hydraulic belt tensioner with hardware
11281748131, deflection pulley
11287516847, deflection pulley
Not for models with Dynamic Drive (active roll control).
This is an OEM Drive Belt Kit manufactured by INA Schaeffler - the original supplier to BMW for this part, as well as many other engine components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.
For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.
BMW Fitments:
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)