This Lid requires a Large Pusher Sleeve that Locks into the lid.
It does not fit the Cuisinart DLC-8 series
DFP-14 is a completely different design and while the DLC-017BGTX lid, will fit on the work bowl DLC-005AGTX-1 it would require a large pusher compatible with the lid, so the original large pusher for the DFP-14 will not work with it.
Original parts for DLC-7 are no longer available. DLC-017BGTX is one of the new parts available for the DLC-7, however it is not compatible with the old parts. If the original parts in Amber then the new Gray parts will not fit with the original bowl.
Work Bowl Cover with Large Feed Tube