GARMIN TRANSOM MOUNT TRANSDUCER for GPSMAP 541s 545s 546s 720s 740s GSD 20 21 22 | eBay
Buy Garmin 010-10272-00, 6-pin Plastic Transom Mount Transducer - Prime Buy
Amazon.com: yourour 010-10272-00 Heavy Duty Transducer Mount Bracket,Transom Mount Bracket Compatible with Garmin Fishfinder,GPSMAP,GSD : Industrial & Scientific