Sensor echo sounder Garmin gt20-tm 77 \ 200 + 455 \ 800 kHz (4-pin) 010-01960-00 with mounting on the Tran and Troller - AliExpress
GARMIN GT20-TM Transom/Trolling Motor Mount 8-Pin Traditional and CHIRP ClearVu Transducer | West Marine
Garmin GT20-TM | Transducer for Shallow Water
Garmin GT20-TM - Transom Mount Transducer (4-pin) With Cables & Mounting Parts 753759152758 | eBay
Garmin GT20-TM 4 Pin Transom Mount Transducer - 010-01960-00 - Max Marine Electronics
Garmin GT20-TM Transom Mount ClearVü 500W 455/800kHz Traditional 77/200kHz 4-pin | eBay
Garmin GT20-TM – Transom Mount ClearVü 500 W (CHIRP 455/800 kHz) Traditional 500 W (77/200 kHz) Transducer with Temp (8-pin) for Sale in Mission Viejo, CA - OfferUp