Cylinder head cover removal and installation procedure for Smart Fortwo 454 with 639.9 engine, showing bracket, hose, and cover locations.

Engine compartment diagram with numbered callouts for cylinder head cover service on diesel engine

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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.