Transfer box

The separate oil pump in the transfer box is dispensed with. This improves the efficiency.

Sufficient levels of lubrication and cooling are assured through the delivery of oil via the spur gear unit.

Fig 1: Identifying Transfer Box Components (ATC 350)

Courtesy of BMW OF NORTH AMERICA, INC.

Example F01, ATC 350

Item	Explanation
1	Transfer box
2	eight-pin plug connection
3	Control unit transfer box (VTG)

Fig 2: Identifying Transfer Box Components (ATC 450L)

Courtesy of BMW OF NORTH AMERICA, INC.

Example F15, ATC450L

Item	Explanation
1	Transfer box
2	eight-pin plug connection
3	Control unit transfer box (VTG) 4 Tank ventilation line