Front crankshaft radial sealing ring replacement procedure for Smart 454.0 engines 134.9, 135.9, with removal and installation steps.

Engine diagram showing crankshaft radial seal and timing case cover locations with numbered callouts and service procedure table.

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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.