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Garmin GT20-TM - Transom Mount Transducer (4-pin) With Cables & Mounting Parts 753759152758 | eBay
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GARMIN GT20-TM Transom/Trolling Motor Mount 8-Pin Traditional and CHIRP ClearVu Transducer | West Marine
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Garmin GT20-TM Transom Mount DownVu 500W (CHIRP 455/800kHz) Traditional 500W (77/200 Hz) Transducer w/Temp - 4-Pin - BOEMarine.com
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Sensor echo sounder Garmin gt20-tm 77 \ 200 + 455 \ 800 kHz (4-pin) 010-01960-00 with mounting on the Tran and Troller
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