Parts such as the Engine Shrouds: Shroud-engine,rh, Shroud-engine,lh, Bolt,6x20, Bolt,6x12 are included in the Kx450d6f 2006 Europe Engine Shrouds parts fiche.
The Kx450d6f 2006 Europe Engine Shrouds consists of four pieces with the Shroud-engine,lh being the most expensive.
In this schematic the "Bolt,6x12" is used most often.