Oil pump chain replacement procedure for 454.0 engine, showing chain tensioner and balance shaft location with numbered callouts.

Engine diagram and service photos showing oil pump chain components and removal sequence for Smart 454 model.

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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.