Garmin 4-Pin Transducer to 8-Pin Sonar Port [010-12721-00]4 Pin Transducer to 8 Pin Sonar Port Connect a 4 pin transducer to an 8 pin sonar port on your compatible marine device with this adapter cable. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov. Specifications: Type: Adapters Box Dimensions: 1"H x 4"W x 5"L WT: 0. 1 lbs UPC: 753759197810