Transmission motors M17/3 and M17/4 on selector drum housing, showing dual actuator assembly with Hall sensors and pulse-width modulation control.

Two cylindrical transmission motors labeled M17/3 and M17/4 mounted on green selector drum assembly with numbered components.

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See all Powertrain figures for the Fortwo (451), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.