Exhaust camshaft, timing chain, chain tensioner, camshaft adjuster, and intake camshaft identification with numbered callouts on 450/451/452/454 engine.

Engine top view showing camshaft components with 10 numbered callout labels identifying parts.

Chassis: Fortwo (450)
System: Powertrain · Engine
Figure type: Exploded view
Source: 2007-2014 smart (450 451 452 454) - Workshop Repair Manual, page 754 Open manual →
Callouts: 10 numbered callouts visible on the figure

Parts referenced

Camshaft sprocket
Exhaust camshaft
Bolt
Screw plug
Timing case cover
Timing chain
Camshaft adjuster
Ratchet
Chain tensioner
Intake camshaft

engineexploded viewcallout numberedservice procedure

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.