SI number

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01 03 90 (184)

Consisting of:

3 = 0491640 Washer
NOTE: (ring washer 1 mm) Transmissions: 4 HP 24 - no. 0 029 160, 4 HP 22 - no. 1 113 936

Fig 1: Identifying Mandrel (0491639)
Courtesy of BMW OF NORTH AMERICA, INC.