It's the L1 120 volt EVSE: brick w/J1772 handle and NEMA 5-15 plug on the other end.
Be careful about getting one from a different model year. I'm not sure if Nissan changed the part number from '13 to '17 model year. The '11 and '12 definitely had a different L1 EVSE than the '13s.
'19 Bolt Premier
'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.