Three-way catalytic converter function schematic showing exhaust gas conversion and lambda control graphs for emission reduction.

Catalytic converter cross-section diagram with inlet pollutants and outlet clean gases, plus two lambda ratio conversion graphs.

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See all Powertrain figures for the Fortwo (450), 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.