Engine compartment components and air conditioning system locations for Smart Fortwo 453 with 639.9 engine.

Six labeled photos of engine bay parts and wiring harnesses with numbered callouts and legend.

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See all Powertrain figures for the Fortwo / Forfour (453), 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.