Air conditioning intake manifold filling valve components and location for model 451.3/4 with identification callouts.

Diagram showing AC valve element, suction pipe, and pressure line for Smart 451 model with front view locator.

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See all HVAC & Comfort 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.