Brake booster vacuum line removal and installation procedure for 454 chassis with engine 639.939, showing engine bay and component locations.

Service procedure diagram showing brake booster vacuum line components and eight-step removal/installation process.

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See all Chassis 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.