Timing gear replacement procedure with callout views of bearing pin, cylinder head, tensioning rail, sprocket, and chain components for 450/451 chassis.

Engine timing chain assembly diagram with nine numbered component callouts and three detail photos.

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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.