Linde used Elecar products as a non standard masts (duplex and triplex) for 353-s. Probably the drum is Elecar too.
These things are not specified in Linde catalogues.
To get it - try TVH, giving them the truck serial No and description what you need. Recently we serviced Elecar masts on some 353-s and TVH very accurately identified the parts for us.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.