S50 part number is
13637840383
Part number 8 on RealOEM here
http://www.realoem.com/bmw/showparts...79&hg=13&fg=15
S54 part number is the same
13637840383
Part number 2 on RealOEM here
http://www.realoem.com/bmw/showparts...11&hg=13&fg=15
If you search on the part number it fits loads of ///M cars from e36/e46/CSL/Z3m's S50 & S54 and even the Z8 so it must be an upgraded part.
http://www.realoem.com/bmw/partxref.do?part=13637840383
13637840383
Part number 8 on RealOEM here
http://www.realoem.com/bmw/showparts...79&hg=13&fg=15
S54 part number is the same
13637840383
Part number 2 on RealOEM here
http://www.realoem.com/bmw/showparts...11&hg=13&fg=15
If you search on the part number it fits loads of ///M cars from e36/e46/CSL/Z3m's S50 & S54 and even the Z8 so it must be an upgraded part.
http://www.realoem.com/bmw/partxref.do?part=13637840383
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