Parts such as the Camshaft & Chain: Guide, Stopper 1, Bolt, Sprocket, Cam Chain, Camshaft Assy 1 are included in the Vp250 2007 5b21 Greece 1f5b2-300f1 Camshaft & Chain parts fiche.
In this schematic the "Bolt" is used most often.
The Bolt is the lowest priced item on this Camshaft & Chain schematic.