The fourteen Mts1000ds 2005 Usa (multistrada 1000 Ds) 9151-1882c 034 Air Intake - Oil Breather component parts are all listed in this schematic.
This Cover, Air Filter Case is the most expensive of the items that make up this 034 Air Intake - Oil Breather assembly.
Some items from this specific schematic: Hook, Rubber Pad, Hose, Drain, Column.