Garmin Cup Transducer Adapter Suction. Use this suction cup adapter to attach your transom mount transducer to the side of your boat. This suction cup adapter is compatible with the following Garmin devices: echo Series echoMAP Series echoMAP CHIRP Series ECHOMAP Ultra (sv) Fishfinder (100 160 240 340C) GPS 125 Sounder GPSMAP (1020xs 1040xs 420 420s 520 520s 525 525s 527xs 547xs 741xs 840xs) GPSMAP Sounder (135 168) GSD 21 and GSD 22 Digital Remote Sounder transducers. Specifications for Garmin Suction Cup Transducer Adapter: Manufacturer: Garmin Color: Black Features of Garmin Suction Cup Transducer Adapter Suctions portable fishfinder to side of boat Durable suction technology for guaranteed hold Compatible Garmin Devices: echo Series echoMAP Series echoMAP CHIRP Series ECHOMAP Ultra (sv) Fishfinder (100 160 240 340C) GPS 125 Sounder GPSMAP (1020xs 1040xs 420 420s 520 520s 525 525s 527xs 547xs 741xs 840xs) GPSMAP Sounder (135 168) GSD 21 and GSD 22 Digital Remote Sounder transducers Waterproof suction cup transducer adapter Package Contents: Garmin Suction Cup Transducer Adapter Garmin 010-10253-00: Cup Transducer Adapter Suction