Mine were replaced for free under warranty, twice as they were leaking. The originals leaked. The replacements leaked and so I got them replaced within the 1 year/12K mile parts warranty since my basic 3 year/36K warranty was over by then. Nissan calls them "stays".
https://parts.nissanusa.com/nissanparts/?selyear=2013&selmodel=LEAF&searchText=stay&action=searchAllCatalogs&makeid=25&siteid=14&catalogID=0
I think https://parts.nissanusa.com/nissanparts/index.cfm?action=replacement&siteid=14&selYear=2014&selOEmodel=ZE0U&groupid=§ionid=900&partcode=90424Q&partnumber=904503NF0A and https://parts.nissanusa.com/nissanparts/index.cfm?action=replacement&siteid=14&selYear=2014&selOEmodel=ZE0U&groupid=§ionid=900&partcode=90425Q&partnumber=904513NF0A are it.
I'd check w/a parts counter to be sure.