Pressure Loss Tester tool 450 589 17 21 00 and valve repair tools for Smart 450, 451, 452, 454 models.

Technical diagram of pressure loss tester gauge and tubing assembly with parts list table below.

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.