Expansion reservoir with coolant pump and thermostat components, engine 132 mounted in chassis 451 model.

Engine compartment showing numbered coolant system components including expansion reservoir, hoses, clamps, and bracket.

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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.