Coolant pump and thermostat service procedure for Engine 132.9 in smart model 451.3/4, identifying pipe components and removal/installation steps.

Engine coolant pipe components diagram with numbered callouts showing hoses, clamps, bolts, and intake manifold locations.

View full-size image ↗

See all Powertrain 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.