Fuel injection valve removal and installation procedure for smart 454.0 engines 134.9, 135.9 with numbered callouts and safety warnings.

Diagram showing four fuel injectors mounted on engine fuel rail with removal steps and sealing ring detail.

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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.