The BMW part number for your 2006 3.0 is 36136773192. They are 14mm shank, and take a 17mm socket.

The 2004 4.8 is 36136773192. These also have a 14mm shank, and take a 19mm socket.

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2002 X5 4.6is, Black Sapphire on Black
1997 328is, Black on Gray
2003 SL500, Black on Gray
UH-1H Helicopter, Yellow