New for CUMMINS SENSOR,NITROGEN OXIDE 4326874 SUPERCED P/N 4326874RX. 2016 Crane Carrier Low Entry L6 11.9L Cummins ISX 4 Pin Connector Square Plug Tailpipe Mounted NOx Sensor. 2013-17 Freightliner Cascadia L6 11.9L Cummins ISX 4 Pin Connector Square Plug Tailpipe Mounted NOx Senson.