Cooling system circuit diagram with labeled components including radiator, expansion reservoir, coolant pump, thermostat, and fan motor on 451 chassis.

Exploded view diagram of engine cooling system components with ten numbered callouts and technical descriptions.

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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.