Power Steering Pulley, BMW - E9X M3 S65, E60 M5, E63 M6

This is the original BMW power steering pump pulley for the S65 V8 and S85 V10 engines. These engines were both high-revving M engines with this very specific power steering pump pulley, not shared with any other BMW models. 

This pulley was used on all 2008-2013 BMW M3 (E90 M3 sedan, E92 M3 coupe, and E93 M3 convertible) as well as the 2006-2010 model BMW M5 sedan and M6 coupe/convertible. 

The S65 V8 was used in model years 2008, 2009, 2010, 2011, 2012, and 2013. The S85 V10 was used in model years 2006, 2007, 2008, 2009, and 2010.