Shift mechanism for 3rd and 4th gear in smart fortwo 451 automated manual transmission with selector drum positions and deflection grid.

Technical diagram of shift mechanism with selector drums, sliding blocks, and shift position grid squares labeled a-d.

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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.