This page covers the John Deere X384 Select Series tractor as a specific model. “Select Series” is useful model context, but it is not a substitute for the X384 PIN or the identification on the installed mower deck.
Verify the machine before using a specification
Record the tractor PIN, engine model and serial number, and deck model. Match each service question to a publication that lists the X384 and covers that PIN range. For parts, use the diagram for the component being serviced; an engine, deck, and tractor can each have separate applicability notes.
Do not merge model fitment by name alone
The X384 and X394 are separate models. Similar series names or a shared-looking deck do not prove the same belt, blade, attachment, or service procedure applies. Check the exact model and serial context in Deere’s documentation before ordering.
Search John Deere manuals and technical publications, then verify components in the official parts catalog. For other X300-family models, return to the X300 Series guide.