Gasoline injection and ignition system data flow chart for M132 engine, 451 chassis, showing sensor and actuator connections.

Schematic diagram of fuel injection and ignition system components and their connections for Smart Fortwo 451.

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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.