Notice: your engine ADP-710 may require this adapter due to a recessed oil drain port or other obstruction. Adapter for 1/4-18 NPT male thread to M12-1.75 female thread for f-107 valve. Fumoto adapters are constructed of 100% brass and designed to add extra length to the engine oil drain valve to allow installation when a recessed drain port location or other obstruction prevents fully tightening the valve.