Furuno 000-160-159 Connector Plug NCS254P 4pin Female Round (Green) Green 4 pin female 21mm diameter (green pin hole area of plug) Rated 10A 250V RoHS Transducer Plug Connector used with Furuno models FCV251 FCV261 FCV271 FCV292 FCV1000 FCV1100 FCV1200 FCV1500