The vacuum diagram labels are available from a local BMW dealer. Because the vacuum circuits vary based on the vehicle model, year, the engine and installed accessories, it would be impossible to provide outlined charts to accurately cover all the various engine and vehicle options. Should the label be missing, or should vehicle be equipped with a different engine from the vehicle's original equipment, replace the labels to reflect the diagrams for the same or similar configuration.
If you wish to obtain a replacement emissions label, the manufacturers must make the labels available for purchase for at least 7 model years after the last production date. The labels can usually be ordered from a local BMW dealer.