SI number

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01 01 89 (989)

Consisting of:

4 = 0492392 Bush
NOTE: (Pressure bushing) For pressing the ball joint into the wishbone
3 = 0492391 Shaped element
NOTE: For positioning the wishbone when pressing in the ball joint
2 = 0492390 Bush
NOTE: (Pressure bushing) For pressing the ball joint out of the wishbone
1 = 0492389 Shaped element
NOTE: For positioning when pressing out the ball joint

Fig 1: Identifying Bush And Shaped Element (0492388)
Courtesy of BMW OF NORTH AMERICA, INC.