Remove/install front cover on cylinder head for 639.939 engine in Smart 454.0 model, showing bracket, filler neck, bolts, and vacuum pump components.

Engine cylinder head front cover removal procedure with numbered callouts and component identification.

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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.