This is a Genuine Ford Crankshaft Oil Retainer Seal for a Ford Focus Mk3 (2011-2018).
The part number for this is 1680874 / BM5G6K301AA.
These will complete as shown in pictures.
Please note, this is Genuine OEM Ford old stock.
Unfortunately I do not have access to correct fitment guides so I stress that you must check part numbers.
Please try to match part numbers as and where possible to avoid disappointment.